No homo
From RangerSquadWiki
No Homo
The phrase "no homo" is used to denote when a situation may appear to be homosexual, but is in fact quite straight.
Example
So Thorn was jacking me off and I totally came on his face. No homo. - Chillybilly
One weakness
The one weakness of the "no homo" declaration is in defense of the 3 strikes and you're gay law. It DOES NOT counter the law, and you still remain gay.