Top definition
Something you say to someone when someone brags about some un-manly or loser achievement. Used to point out that someone might be smart but they have a small penis. Can be used even if you are unsure of the individuals penis size. Usually preceded by wait.
Dexter: Bro I just got to level 138 on Runescape!!!!!
Paul: Wait, how big is your penis?
by The B Master March 05, 2011
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