A sexual act with several steps.
1. Talk your partner into giving you 'road head', or performing
oral sex on you while you drive his/her car.
2. During climax, yell 'GEE WHIZ MISTER McDEE!' and crash the car at
high speed into a tree or other
stationary object. Your seat belt should save you, but likely eject your lover from the vehicle.
3. Like Launchpad McQuack, walk away from the crash.