Bus Willy

When a male is riding on a bus or automobile and their penis becomes erect, usually just before they need to get off/get out of the automobile.
"I sure hope Olivia isn't looking this way, because I have some serious bus willy."
by DeezNutsForPresident September 7, 2015
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bus stop willy

A penis drawn badly in graffitti often drawn on bus stops.
Also reffered to as a BSW
"hey check that bus stop willy"
by J-Dawg + Br3sh June 7, 2007
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