wen engaging in sexual activity, just before the male ejaculates he yells tuna surprise, at which point a friend jumps out the wardrobe and slaps the female in the face with a fish

A pick me is a woman that is willing to do anything for male approval. She will embarrass or throw other women under the bus to achieve this goal. The unfortunate thing about a pick me is usually the men they are trying to seek approval from are of poor quality and treat women badly, leaving little real benefit for the pick me.

While performing oral sex on a woman, the giving parter spreads the labia and screams "SURPRISE!" into her vagina

When a pervert or deviant abuses a large-mouthed fish for sexual gratification, filling it with a substance resembling mornay sauce. An act of grievous fish-abuse.

a fishy ass pussy