I was fooling around one night with a GF back in college in her dorm room (single)- BJ/HJ. So she got me off with her hand, I blew my load, I cleaned it up with a T-shirt and we went to sleep.
The next morning she starts laughing and rolling her eyes. Old Faithful had also erupted on to the front cover of a paper that she had written for class that was on her desk, next to the bed.
I really hope that she re-printed it before handing it in...