Say dude your ass is big, no homo!
i've heard and used the expression long before the diplomats (dipset) rise to fame. i believe they popularized it, but certainely didn't coin it.
"get the fuck off our dicks no homo!" -cameron giles, aka cam'ron
Man 2: Woah! No homo right?
Man 1: Yeah! No homo.
Kid: I really like long italian sausages! No homo
Kanye West: How you can go from bein' Joe Blow to everybody on yo' dick no homo.
Eminem: All you lil' faggots can suck it, No homo, but I'ma stick it to 'em like refrigerator magnets!
"Bro can i see your piece? no homo." "Oh yeah sure no problem" <perfectly straight