Personally, I'm rather quiet during sex. But, this post reminds me of something evil I did when I had an ex boyfriend, who although he had broken up with me (his idea) wasn't getting the message about it being time to move out of my house. So, I gave him a little nudge that it was time to move on.
I knew the ex went out dancing on certain nights, and knew exactly at what late hour he would come in. I had met a guy that was an absolute screamer throughout sex, even before his orgasm. So, I brought the new guy home on the ex's dance night out, fooled around a little, and let him go to sleep. When I heard the ex's car in the driveway, I woke him up, said I needed to fuck, and proceeded to do so. The ex came in very quietly, so the new guy had no idea there was an audience, and showed no restraint in this moans, screams, and language. I gave it to him for a good long time, then made him cum as loudly as possible.
It was wonderful to see the ex's expression and behavior when we all met in the morning. Of course, I feel a little bad about the embarassment I caused the new guy when he discovered that someone was in the house while he was carrying on, but it was worth it!