diff --git a/extras/conf/SRB2-22.cfg b/extras/conf/SRB2-22.cfg
index d2998d09e..edd5be442 100644
--- a/extras/conf/SRB2-22.cfg
+++ b/extras/conf/SRB2-22.cfg
@@ -1527,7 +1527,7 @@ linedeftypes
 			title = "Bustable Block";
 			prefix = "(254)";
 			flags8text = "[3] Slope skew sides";
-			flags64text = "[6] Only bustable by Knuckles";
+			flags64text = "[6] Strong characters only";
 			flags128text = "[7] Only block non-players";
 			flags512text = "[9] Shattered by pushables";
 			flags1024text = "[10] Trigger linedef executor";
diff --git a/src/dehacked.c b/src/dehacked.c
index 68da8b022..a2ce81097 100644
--- a/src/dehacked.c
+++ b/src/dehacked.c
@@ -8919,9 +8919,9 @@ struct {
 	{"FF_PLATFORM",FF_PLATFORM},               ///< You can jump up through this to the top.
 	{"FF_REVERSEPLATFORM",FF_REVERSEPLATFORM}, ///< A fall-through floor in normal gravity, a platform in reverse gravity.
 	{"FF_INTANGABLEFLATS",FF_INTANGABLEFLATS}, ///< Both flats are intangable, but the sides are still solid.
-	{"FF_SHATTER",FF_SHATTER},                 ///< Used with ::FF_BUSTUP. Thinks everyone's Knuckles.
-	{"FF_SPINBUST",FF_SPINBUST},               ///< Used with ::FF_BUSTUP. Jump or fall onto it while curled in a ball.
-	{"FF_ONLYKNUX",FF_ONLYKNUX},               ///< Used with ::FF_BUSTUP. Only Knuckles can break this rock.
+	{"FF_SHATTER",FF_SHATTER},                 ///< Used with ::FF_BUSTUP. Bustable on mere touch.
+	{"FF_SPINBUST",FF_SPINBUST},               ///< Used with ::FF_BUSTUP. Also bustable if you're in your spinning frames.
+	{"FF_STRONGBUST",FF_STRONGBUST },          ///< Used with ::FF_BUSTUP. Only bustable by "strong" characters (Knuckles) and abilities (bouncing, twinspin, melee).
 	{"FF_RIPPLE",FF_RIPPLE},                   ///< Ripple the flats
 	{"FF_COLORMAPONLY",FF_COLORMAPONLY},       ///< Only copy the colormap, not the lightlevel
 	{"FF_GOOWATER",FF_GOOWATER},               ///< Used with ::FF_SWIMMABLE. Makes thick bouncey goop.
diff --git a/src/p_spec.c b/src/p_spec.c
index c5289de3b..c2142e526 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -7092,7 +7092,7 @@ void P_SpawnSpecials(INT32 fromnetsave)
 			case 254: // Bustable block
 				ffloorflags = FF_EXISTS|FF_SOLID|FF_RENDERALL|FF_BUSTUP;
 				if (lines[i].flags & ML_NOCLIMB)
-					ffloorflags |= FF_ONLYKNUX;
+					ffloorflags |= FF_STRONGBUST;
 
 				P_AddFakeFloorsByLine(i, ffloorflags, secthinkers);
 				break;
diff --git a/src/p_user.c b/src/p_user.c
index 3f4d08222..e572e771b 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -2456,39 +2456,42 @@ static void P_CheckBustableBlocks(player_t *player)
 
 				if ((rover->flags & FF_BUSTUP)/* && !rover->master->frontsector->crumblestate*/)
 				{
-					// If it's an FF_SPINBUST, you have to either be jumping, or coming down
-					// onto the top from a spin.
-					if (rover->flags & FF_SPINBUST && ((!(player->pflags & PF_JUMPED) && !(player->pflags & PF_SPINNING) && !(player->pflags & PF_BOUNCING)) || (player->pflags & PF_STARTDASH)))
+					// If it's an FF_SHATTER, you can break it just by touching it.
+					if (rover->flags & FF_SHATTER)
+						goto bust;
+
+					// If it's an FF_SPINBUST, you can break it if you are in your spinning frames
+					// (either from jumping or spindashing).
+					if (rover->flags & FF_SPINBUST
+						&& (((player->pflags & PF_SPINNING) && !(player->pflags & PF_STARTDASH))
+							|| (player->pflags & PF_JUMPED && !(player->pflags & PF_NOJUMPDAMAGE))))
+						goto bust;
+
+					// You can always break it if you have CA_GLIDEANDCLIMB
+					// or if you are bouncing on it
+					// or you are using CA_TWINSPIN/CA2_MELEE.
+					if (player->charability == CA_GLIDEANDCLIMB
+						|| (player->pflags & PF_BOUNCING)
+						|| ((player->charability == CA_TWINSPIN) && (player->panim == PA_ABILITY))
+						|| (player->charability2 == CA2_MELEE && player->panim == PA_ABILITY2))
+						goto bust;
+
+					if (rover->flags & FF_STRONGBUST)
 						continue;
 
-					// if it's not an FF_SHATTER, you must be spinning (and not jumping)
-					// or be super
-					// or have CA_GLIDEANDCLIMB
-					// or be in dashmode with SF_DASHMODE
-					// or be using CA_TWINSPIN
-					// or be using CA2_MELEE
-					// or are drilling in NiGHTS
-					// or are recording for Metal Sonic
-					if (!(rover->flags & FF_SHATTER) && !(rover->flags & FF_SPINBUST)
-						&& !((player->pflags & PF_SPINNING) && !(player->pflags & PF_JUMPED))
+					// If it's not an FF_STRONGBUST, you can break if you are spinning (and not jumping)
+					// or you are super
+					// or you are in dashmode with SF_DASHMODE
+					// or you are drilling in NiGHTS
+					// or you are recording for Metal Sonic
+					if (!((player->pflags & PF_SPINNING) && !(player->pflags & PF_JUMPED))
 						&& !(player->powers[pw_super])
-						&& !(player->charability == CA_GLIDEANDCLIMB)
-						&& !(player->pflags & PF_BOUNCING)
 						&& !((player->charflags & SF_DASHMODE) && (player->dashmode >= 3*TICRATE))
-						&& !((player->charability == CA_TWINSPIN) && (player->panim == PA_ABILITY))
-						&& !(player->charability2 == CA2_MELEE && player->panim == PA_ABILITY2)
 						&& !(player->pflags & PF_DRILLING)
 						&& !metalrecording)
 						continue;
 
-					// Only players with CA_GLIDEANDCLIMB, or CA_TWINSPIN/CA2_MELEE users can break this rock...
-					if (!(rover->flags & FF_SHATTER) && (rover->flags & FF_ONLYKNUX)
-						&& !(player->charability == CA_GLIDEANDCLIMB
-						|| (player->pflags & PF_BOUNCING)
-						|| ((player->charability == CA_TWINSPIN) && (player->panim == PA_ABILITY))
-						|| (player->charability2 == CA2_MELEE && player->panim == PA_ABILITY2)))
-						continue;
-
+				bust:
 					topheight = P_GetFOFTopZ(player->mo, node->m_sector, rover, player->mo->x, player->mo->y, NULL);
 					bottomheight = P_GetFOFBottomZ(player->mo, node->m_sector, rover, player->mo->x, player->mo->y, NULL);
 
diff --git a/src/r_defs.h b/src/r_defs.h
index 6aeb0671c..4a5c38410 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -139,9 +139,9 @@ typedef enum
 	FF_PLATFORM          = 0x2000000,  ///< You can jump up through this to the top.
 	FF_REVERSEPLATFORM   = 0x4000000,  ///< A fall-through floor in normal gravity, a platform in reverse gravity.
 	FF_INTANGABLEFLATS   = 0x6000000,  ///< Both flats are intangable, but the sides are still solid.
-	FF_SHATTER           = 0x8000000,  ///< Used with ::FF_BUSTUP. Thinks everyone's Knuckles.
-	FF_SPINBUST          = 0x10000000, ///< Used with ::FF_BUSTUP. Jump or fall onto it while curled in a ball.
-	FF_ONLYKNUX          = 0x20000000, ///< Used with ::FF_BUSTUP. Only Knuckles can break this rock.
+	FF_SHATTER           = 0x8000000,  ///< Used with ::FF_BUSTUP. Bustable on mere touch.
+	FF_SPINBUST          = 0x10000000, ///< Used with ::FF_BUSTUP. Also bustable if you're in your spinning frames.
+	FF_STRONGBUST        = 0x20000000, ///< Used with ::FF_BUSTUP. Only bustable by "strong" characters (Knuckles) and abilities (bouncing, twinspin, melee).
 	FF_RIPPLE            = 0x40000000, ///< Ripple the flats
 	FF_COLORMAPONLY      = 0x80000000, ///< Only copy the colormap, not the lightlevel
 	FF_GOOWATER          = FF_SHATTERBOTTOM, ///< Used with ::FF_SWIMMABLE. Makes thick bouncey goop.