It's crazy how you can go from being Joe BlowAnyway, here are some videos that explain "no homo". And if you're wondering, it's homophobic and you shouldn't use it, unless you're doing it ironically during actual gay sex.
To everybody on your BLEEP, no BLEEP
Getting everyone up to speed on 'No Homo' or Jay-Z is a tool
(via Andrew Sullivan)
No Homo: That's Gay