0/5 Kripkes

Also spelled zero out of five Kripkes, or 0 out of 5 Kripkes, is slang for Sour Patch Kids Cereal coined by Ted Nivison.

Mom: I'm sorry son, but I couldn't find any 0/5 Kripkes at the store.
Son: That's alright. I've heard they're pretty bad anyway.
Mom: I can probably order them online. I want you to have the best breakfast possible, sweetie!