1 definition by T-B4G

When you get a boner so fast that it causes a loud bang to emanate from your crotch area.
Jeff: "WHAT THE HELL? WAS THAT A SONIC BOOM?"
Trev: "No Man! Emily just touched my vinky!"
Jeff: "Oh! I thought a jet flew over."
by T-B4G April 3, 2007
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