to get the blood flowing to the penis without necessarily being in a sexual situation.
My doctor is a hot woman and I needed a testicle exam. Being it was a freezing cold day I needed to chub up before she came in the room.
by glenn1907 April 01, 2007
to enlarge the penis without making it look erect, just to get the blood flowing. Making it look flacis, but slightly longer/thicker than normal

to unshrink the penis
he needed to chub up a bit before she came in the room, so as to loosen up his shrunk penis
by Notsob November 13, 2006

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