A CONDOM. This word is created with the Chinese word for penis which is "papaya", and the American meaning of the word which is a kind of fruit. Since you put papayas in fruit cups, it would be like putting your penis or "papaya" in somthing. The penis is the fruit and the condom is the cup. And that's how "fruit cup" was born.
A sex act pertaining of preferably 3-4 people where the contents of a fruit cup or fruit cocktail is put into another anal cavity, the other participant then packs it in, the next step is sharing the cocktail, by taking turns, eating the farted out fruit, Ass to Mouth.
Bob:Hey man you goin' out tonight
Joe:Nope Janey is kinky tonight
Bob:Howa bout i join, you know the little fruit cup *wink wink*
Joe:yeah why not? we need another person.
Janey:Im not being the cup.