A sexual act that involves a woman sliding naked down a slide with her legs spread , while a man waits at the bottom with a fully erect penis. The goal being for the woman's vagina to make contact with the penis at the bottom thereby achieving sexual intercourse. Due to high level of skill involved it should only be attempted by trained proffesionals. Sidenote: This is believed to be the inspiration for the song "Crash into me" by the Dave Matthews Band.