Face to Headboard Missile

A sexual act in which the male is attempting anal (after coming close but being denied several times). The male positions himself behind the female, puts the tip of his penis in her anus, latches on to her hips, digs in his toes and thrusts for all he is worth. The female will typically shoot off the penis with high velocity, crashing face first into the headboard of the bed, occasionally knocking herself unconscious.