the excitement 

the "discreet" term my boyfriend uses when he asks me if I wanna have sex

Alex was getting ansy at the party and wouldn't you know it, he leaned over and whispered in my ear, " Do you wanna go and have the excitement?"

the excitement by Linnea December 30, 2004

The excrement made physical contact with a hydro-electric powered oscillating air current distribution device 

The origin of "The shit hit the fan".

Man, when the excrement makes physical contact with a hydro-electric powered oscillating air current distribution device, I'm hittin' the road.

The excrement made physical contact with a hydro-electric powered oscillating air current distribution device by Mouse October 1, 2004

after the excrement hit the air-conditioning

A clever saying from the book "Hocus Pocus" by Kurt Vonnegut that he uses as a term for the end of the Vietnam War.

This saying now can be said to reprisent the ending of something that you'd rather not say, such as a relationship or a friendship.

Girl 1: "Why don't you and Nick talk anymore?"
Girl 2: "Well, after the excrement hit the air-conditioning, he just turned into a complete asshole and stopped talking to me."

after the excrement hit the air-conditioning by super_juicebox November 6, 2008

after the excrement hit the air-conditioning

A phrase used to signal when some inevitable bad thing has happened.
Everyone involved usually gets punished or ill effects.
A different version of "when the shit hits the fan"

Phil called the bouncer an idiot. After the excrement hit the air-conditioning and now Phil and all his mates are banned from the club

after the excrement hit the air-conditioning by TaintedDeity May 14, 2008