No homo

From OAPedia.com

"No homo" is a phrase that people say to negate something they've said or done that's really gay. By saying "no homo", you're basically admitting you're not really gay, despite whatever it was that you did. It was popularized by an Opie and Anthony intern who would do gay things to the show staff. When confronted about it, he mentioned how what he did wasn't gay because of the "no homo" phrase. It was revealed, however, that he never actually used the phrase when he did his gay shit.