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?!
When a girl is going down on you, and she is coming up for air you whip lash her as hard as you can with your "head" on her forehead so that a mushroom tattoo appears.
When you are fucking a chick in the ass, and right when you are about to cum, you chop off her head, and quickly burn down their house, then ejaculate on the remains.
I scream Colorado head butt seconds prior to going through the motions of an actual head butt but just prior to heads connecting I stop and straight punch to the nuts as their eyes are closed expecting a head butt