Getting Caught - w/your pants down

[Keyser Soze]

has anyone actually had this happen before? the closest i came was many many times back when i lived at home the knock on the door midway through some form of sex. i always locked the door so i never got caught where they actually witnessed anything midway, but got the knock plenty of times. they totally knew what was going on everytime but at least i spared them some embarrassment.