Ha ha, I did hear it once many years ago. I first heard loud moaning. I thought that someone was sick or something, Then I started hearing her say "yes" and other things. Then I heard the bouncing. I turned on the tv louder and I guess they got the message (that I could hear them) but every so often I could hear the bed moving so I know they were still busy. Not a problem because this only went on for about 10 or 15 minutes and then it was over. It was funny because it reminded me of the film porky's where "lassie" started moaning and screaming and the guy had to stuff a (used) sock in her mouth to keep her quiet.