A sexual act when a person sticks a whipped cream nozzle in their partner's anus and their partner proceeds to deficate on their chest. Can be altered slightly to hot fudge sundae with nuts if their partner has a BM that is a little chunky. Also, cherry on top if she happens to be on her period and pulls out her bloody tampon and sticks it on top.
" Man, I got a hot fudge sundae last night from a Vietnamese girl. It was awesome, she ate it off me afterwards. Yes, cherry and all, I said she was Vientamese."