Once when i was 15 me and a friend were double teaming this chick in my bedroom at around 2am. She was on her hands and knees and I was in front while my buddy was taking care of the rear. So we're giving it to her and all of the sudden my mom walks in. All she said was "excuse me, sorry." then she shut the door and walked away. The next morning my mom had alot of questions. :D