diff --git a/code/modules/food_and_drinks/food/snacks.dm b/code/modules/food_and_drinks/food/snacks.dm
index 5643185bfb5..71a089683ce 100644
--- a/code/modules/food_and_drinks/food/snacks.dm
+++ b/code/modules/food_and_drinks/food/snacks.dm
@@ -1,3 +1,4 @@
+#define MAX_WEIGHT_CLASS WEIGHT_CLASS_SMALL * 2
 //Food items that are eaten normally and don't leave anything behind.
 /obj/item/weapon/reagent_containers/food/snacks
 	name = "snack"
@@ -14,6 +15,7 @@
 	var/dry = 0
 	var/cooktype[0]
 	var/cooked_type = null  //for microwave cooking. path of the resulting item after microwaving
+	var/total_w_class = 0 //for the total weight an item of food can carry
 
 
 	//Placeholder for effect that trigger on eating that aren't tied to reagents.
@@ -131,6 +133,10 @@
 		)
 		inaccurate = 1
 	else if(W.w_class <= WEIGHT_CLASS_SMALL && istype(src,/obj/item/weapon/reagent_containers/food/snacks/sliceable))
+		if(total_w_class > MAX_WEIGHT_CLASS)
+			// Nope, no bluespace slice food
+			to_chat(user, "<span class='warning'>Something is already in [src]!</span>")
+			return 1
 		if(!iscarbon(user))
 			return 1
 		to_chat(user, "<span class='warning'>You slip [W] inside [src].</span>")
@@ -138,6 +144,7 @@
 		if((user.client && user.s_active != src))
 			user.client.screen -= W
 		W.dropped(user)
+		total_w_class += W.w_class
 		add_fingerprint(user)
 		contents += W
 		return
@@ -2521,4 +2528,5 @@
 	icon_state = "onionrings"
 	list_reagents = list("nutriment" = 3)
 	filling_color = "#C0C9A0"
-	gender = PLURAL
\ No newline at end of file
+	gender = PLURAL
+#undef MAX_WEIGHT_CLASS
\ No newline at end of file