When I used to live with an old flame, we'd been out for a night out with a guy he'd met from work.
This friend was staying at our place for the night and walked in on us whilst he was "looking for the toilet". He then proceeded to walk in on us a further 4-or-5 times. cheeky sod!
Also had to stop mid 'session' once - to chuck up out the window... (I'd had to much to drink). Same boyfriend actually, think maybe we drank and shagged too much. When I got up the next day and asked 'who'd been squirting silly string on the roof' he replied that it was actually my stomach acid... the previous nights activities all came flooding back!!!
Can't believe I've told everyone that!