As much as I love crazy sex, the sight/sound of another cute girl a few feet away getting the same treatment (or worse!) always makes it 100x hotter. This is why I like swingers clubs... (x-post /r/gangbang)
I've stopped sucking it in & get lots of stares or confused/disgusted looks but there's only so much I can hide and if people want to stare I guess worse things have happened