superchunk on 11 August 2010
both ways.
I walked in on my parents when I was a kid (5yrs old) and my wife's sister (15 at the time) walked in on us hittin it doggy style.
No biggie, my parents yelled at me to knock and my wife and I laughed then continued. Later on we told her, see that's why you should knock. Normally door would have been locked but she wasn't there when we started.
