To cup ones balls with your palm in the shape of a ... well cup. Just as if to use your hand as a sports cup. Can often be used in Rape/verbal harassment. (Thanx Austin.)
The curving of one's hand(s) into a cup formation and gently proceeding to cup the ass or any other sexual body part of an another.
Usually done with consent of both parties, but know to have other occurrences.
Other Forms:
Soft Cup
Soft Cupping
Soft Cupped
A:"Look at that butt"
B:"Ima go soft cup that"
OR
"she let me get some good soft cuppage"