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1 definition by whatdafukbro

The process of when one male thrusts his penis in an up and down motion through another mans scrotum as the balls are wrapped around the penis.
Tom: Hey m8 wanna come round tonight?
Clarke: I dunno m8 will you make it worth my while?
Tom: Yeah m8 I'll give you dat dere ballfap.
by whatdafukbro May 01, 2010