Fun Guts in a term me and my friends made up in 6th grade, Fun guts describes something funny or amusing. Or if you say you want to play with someone "fun guts" it means you like them and want to hang out.
Noun: Fun guts, something funny, amusing or silly
Adjective: Describes someone as Funny and comedic
You know how slime is fun to play with and its wet and squishy, well fun guts are intestines that are fun like slime.
Fun guts refers to Cartoon organs and fake intestines.
I want to play with your fun guts.
You act like some fun guts.
Hello my fun guts.