Reminds me of a British commercial (dunno what year it was made) I saw last week on one of those HBO adult programs about dirty commercials around the world. Basically three naked guys would stand on stage with a black draped box in front of their privates and a woman would come along and look at their cocks and guess what car each drove.
You can figure out the rest ... it was basically you hear laughs, see a big car, hear laughs, see a big car, stunned silence and collective "ooohs" from the audience while guy number three smiles proudly ... and the commercial ends showing a subcompact. ... Yes it was a real car commercial.