person A: i try not to drink to much on the weekends with my friends _comma_but when i do i start doing dumb stuff and wake up in the morning apologizing to everyone 
person B: I've been there before!  Do you ever remember the stuff that you do?
person A: no _comma_ but everyone told me how i messed up the night before
person B: Oh no!  I hope it wasn't too embarrasing!