sexual manoevre in the doggy style position involving a headboard or suitable wall. the partner must have their head reasonably close to said wall, while the male slaps the sides of the partners thighs during intercourse. at the point of no return, the male pulls out, slams back in with enough force to hit the partner's head on the wall and yells "TILT!!!"
"Jessica came crawlin back."
"I needed to get my rocks off, so i pulled the ol' pinball machine on her"