When two parties "accidentally" do something gay, party 1 may say "no-homo" to end the homo-ness. However, party 2 may say a second "no-homo" and cancel out 1's declaration of no homo-ness.

Guy2: No homo
Guy1: Stop making it homo! You're canceling out mine!

This theory may be also applicable to "no hetero"
No Homo Theory in action:
Guy1: I love you man, no homo.
Guy2: No homo
Guy1: No homo
Guy2: No homo
Guy1: Stop making it homo! You're canceling out mine!
by InspaRED April 15, 2009
Get the No Homo Theory mug.