Top Definition
The act of slapping one's penis off of a victims forehead, leaving a bright red mark resembling that of an atomic mushroom cloud.
my girl wouldn't finish me, so I stamped her with an atomic mushroom
by tims1416 September 16, 2009
5 Words related to Atomic Mushroom

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.