When my exwife and I first moved into the place I'm still at, we had a neighbor about our age (dude). He'd bring someone new over almost every weekend. Most quiet. At one point - where my wife got him kicked out of the place - he had had a girlfriend for a number of weeks, she was loud! That and the headboard would hit the wall. Our beds were against the same wall, so we'd be woken up early in the morning. It was fine for a while, but after a talk with him, it seems he made sure to knock her silly early in the AM, just to piss us off. One time my wife waited right until the climax and pounded on the wall. Shut them up, pissed them off and ruined their fun that morning.