There was an episode of the Dating Game with Bob Eubanks that had a similar incident.The question was "Name a place you'd like to have sex,where you personally have never had sex before."The husband said "a car" but when the wife is called out she says "oh I don't know...in the @ss?"
Husband's eyes get big and his expression is priceless.You can tell he's very happy with this new information!!
Actually saw it on a prime time bloopers show with only one word bleeped.A true classic!
cheers