Ugh - I did. When I was between "real" jobs I did some tech work for a guy I knew... he was gay, fine, whatever, I have no problem with that, but then when I'm managing his FTP folders I come across videos of him jerking himself off and cumming all over himself. Ugh. I quit soon after, couldn't look the dude in the face.
I mean, we all do it - but really, I don't need to see that shit.