That reminds me of that south park episode where Mr. Garrison invents that vehicle that operates by shoving a rod up your ass and you have to steer it by blowing the knobs. Then he can't understand why anyone WOULDN'T want to drive a vehicle in that manner.
Fucking classic. Especially when everyone's trying it out and they're having to lower their anuses down on the stick to give it gas...so disgusting it's funny.