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When a man runs full-force with an erect penis into their partner's face. This act is highly dangerous and often fatal, as it requires great cunning and penile precision.
Jake: Hey, did you hear what happened to Alex? Tried to give his girlfriend Miranda a Missouri Head Butt last night. Wound up in the hospital. He might not make it.

Bobby: Oh my God! Why didn't he just listen to us and give her a Steaming Hot Pan instead?!
by The Graham Cracker November 09, 2011
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