diff --git a/src/dehacked.c b/src/dehacked.c
index e488d3ee6..998b299d3 100644
--- a/src/dehacked.c
+++ b/src/dehacked.c
@@ -6395,6 +6395,10 @@ static const char *const STATE_LIST[] = { // array length left dynamic for sanit
 	"S_SHADOW",
 	"S_WHITESHADOW",
 
+	"S_BUMP1",
+	"S_BUMP2",
+	"S_BUMP3",
+
 #ifdef SEENAMES
 	"S_NAMECHECK",
 #endif
@@ -6958,6 +6962,8 @@ static const char *const MOBJTYPE_LIST[] = {  // array length left dynamic for s
 	"MT_WAYPOINT",
 	"MT_SHADOW",
 
+	"MT_BUMP",
+
 #ifdef SEENAMES
 	"MT_NAMECHECK",
 #endif
diff --git a/src/info.c b/src/info.c
index 71711b681..2d558168a 100644
--- a/src/info.c
+++ b/src/info.c
@@ -58,7 +58,7 @@ char sprnames[NUMSPRITES + 1][5] =
 	"SPRG","BSPR","RNDM","RPOP","KFRE","DRIF","DSMO","FITM","DFAK","BANA",
 	"DBAN","GSHE","GSTR","DGSH","RSHE","RSTR","DRSH","BOMB","BLIG","LIGH",
 	"SINK","SITR","LAKI","POKE","AUDI","DECO","DOOD","SNES","GBAS","SPRS",
-	"BUZB","CHOM","SACO","CRAB", "SHAD"
+	"BUZB","CHOM","SACO","CRAB", "SHAD", "BUMP"
 };
 
 // Doesn't work with g++, needs actionf_p1 (don't modify this comment)
@@ -2851,6 +2851,10 @@ state_t states[NUMSTATES] =
 	{SPR_SHAD, FF_TRANS50, -1, {NULL}, 0, 0, S_NULL}, // S_SHADOW
 	{SPR_SHAD, FF_FULLBRIGHT|FF_TRANS50|1, -1, {NULL}, 0, 0, S_NULL}, // S_WHITESHADOW
 
+	{SPR_BUMP, 0, 5, {NULL}, 0, 0, S_BUMP2}, // S_BUMP1
+	{SPR_BUMP, 1, 5, {NULL}, 0, 0, S_BUMP3}, // S_BUMP2
+	{SPR_BUMP, 2, 5, {NULL}, 0, 0, S_NULL}, // S_BUMP3
+
 #ifdef SEENAMES
 	{SPR_NULL, 0, 1, {NULL}, 0, 0, S_NULL}, // S_NAMECHECK
 #endif
@@ -16510,6 +16514,32 @@ mobjinfo_t mobjinfo[NUMMOBJTYPES] =
 		S_NULL          // raisestate
 	},
 
+	{           // MT_BUMP
+		-1,             // doomednum
+		S_BUMP1,        // spawnstate
+		1000,           // spawnhealth
+		S_NULL,         // seestate
+		sfx_None,       // seesound
+		8,              // reactiontime
+		sfx_None,       // attacksound
+		S_NULL,         // painstate
+		0,              // painchance
+		sfx_None,       // painsound
+		S_NULL,         // meleestate
+		S_NULL,         // missilestate
+		S_NULL,         // deathstate
+		S_NULL,         // xdeathstate
+		sfx_None,       // deathsound
+		0,              // speed
+		32*FRACUNIT,    // radius
+		64*FRACUNIT,    // height
+		0,              // display offset
+		100,            // mass
+		0,              // damage
+		sfx_None,       // activesound
+		MF_NOGRAVITY|MF_SCENERY|MF_NOCLIP|MF_NOCLIPHEIGHT, // flags
+		S_NULL          // raisestate
+	},
 	// ============================================================================================================================//
 
 #ifdef SEENAMES
diff --git a/src/info.h b/src/info.h
index c6c448f01..1e4bde5c3 100644
--- a/src/info.h
+++ b/src/info.h
@@ -617,6 +617,8 @@ typedef enum sprite
 	SPR_CRAB, // Crystal Abyss mobs
 	SPR_SHAD, // TD shadows
 
+	SPR_BUMP, // Player/shell bump
+
 	SPR_FIRSTFREESLOT,
 	SPR_LASTFREESLOT = SPR_FIRSTFREESLOT + NUMSPRITEFREESLOTS - 1,
 	NUMSPRITES
@@ -3364,6 +3366,10 @@ typedef enum state
 	S_SHADOW,
 	S_WHITESHADOW,
 
+	S_BUMP1,
+	S_BUMP2,
+	S_BUMP3,
+
 #ifdef SEENAMES
 	S_NAMECHECK,
 #endif
@@ -4001,6 +4007,8 @@ typedef enum mobj_type
 	MT_MOSSYTREE,
 	MT_SHADOW,
 
+	MT_BUMP,
+
 #ifdef SEENAMES
 	MT_NAMECHECK,
 #endif
diff --git a/src/k_kart.c b/src/k_kart.c
index 94cf06079..efc931ed9 100644
--- a/src/k_kart.c
+++ b/src/k_kart.c
@@ -1048,8 +1048,8 @@ boolean K_IsTouching(mobj_t *mobj1, mobj_t *mobj2)
 
 void K_SwapMomentum(mobj_t *mobj1, mobj_t *mobj2, boolean bounce)
 {
-	fixed_t newx;
-	fixed_t newy;
+	fixed_t newx, newy;
+	mobj_t *fx;
 
 	if (mobj1 == NULL || mobj2 == NULL)
 		return;
@@ -1064,6 +1064,14 @@ void K_SwapMomentum(mobj_t *mobj1, mobj_t *mobj2, boolean bounce)
 		S_StartSound(mobj1, cv_collidesoundnum.value);
 		//S_StartSound(mobj2, cv_collidesoundnum.value);
 	}
+
+	fx = P_SpawnMobj((mobj1->x + mobj2->x)/2, (mobj1->y + mobj2->y)/2, (mobj1->z + mobj2->z)/2, MT_BUMP);
+	if (mobj1->eflags & MFE_VERTICALFLIP)
+		fx->eflags |= MFE_VERTICALFLIP;
+	else
+		fx->eflags &= ~MFE_VERTICALFLIP;
+	fx->scale = mobj1->scale;
+	
 	if (deltaV1 < (cv_collideminimum.value * FRACUNIT / 2))
 	{
 		fixed_t a = 0;
diff --git a/src/p_mobj.c b/src/p_mobj.c
index 52c52fbc9..e27bb1463 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -1737,11 +1737,18 @@ void P_XYMovement(mobj_t *mo)
 			//{ SRB2kart - Green Shell, Fireball
 			if (mo->type == MT_GREENITEM)
 			{
+				mobj_t *fx;
+				fx = P_SpawnMobj(mo->x, mo->y, mo->z, MT_BUMP);
+				if (mo->eflags & MFE_VERTICALFLIP)
+					fx->eflags |= MFE_VERTICALFLIP;
+				else
+					fx->eflags &= ~MFE_VERTICALFLIP;
+				fx->scale = mo->scale;
 				if (mo->health > 1)
 				{
-				S_StartSound(mo, mo->info->attacksound);
-				mo->health--;
-				mo->threshold = 0;
+					S_StartSound(mo, mo->info->attacksound);
+					mo->health--;
+					mo->threshold = 0;
 				}
 				else if (mo->health == 1)
 				{