When a man has a visable boner and it hangs out over his pants, chair, etc. and is visable to people around him.
The night at the hookah bar was ruined by the skinny kid with his huge buck penis that scared off my friends and made my girlfriend yearn for it.
by The Heebrew Hammer September 22, 2005
Get the buck penismug. by buckbuckchickenegg16 November 9, 2020
Get the penis buck buck chicken eggmug.