The act of inserting a fluffy sticky soft candy into the anus in any amount to be dissolved in the colon before anal sex/masturbation to purge the lower bowels of all fecal matter. After purged, it can be done again to fill the colon with a clear sticky fluid for the enjoyment of others. Marshmallows are a powerful laxative. Marshmallow stuffing should not be done by diabetics or anyone else concerned with blood sugar. Should be done in moderation to avoid pooping yourself at work.
I stuffed 6 campfire marshmallows (marshmallowstuffing) about 30 minutes ago and I can't hold them anymore!
When you are whispering the play by play from a Red Soxgame to a naked girl while simultaneously sprinkling Old Bay seasoning and drawn butter on her with the intention of giving her a Cleveland Steamer later.
Bill was getting excited thinking of a cape cod stuffie while spending time with his daughter's friend eating at the epic oyster