A method of cock blocking whereby a male will knowingly suggest another male wear unattractive clothing by telling him the clothing is actually attractive, thereby preventing the "blockee" from attracting females and giving the "blocker" better odds of attracting a mate.
Male #1: "Why is Jimmy wearing an Ed Hardy hat, t-shirt AND jacket all at the same time?"
A gay man who prevents a straight man from scoring sexually with a woman.
Man, I can't believe it. I was hanging out with Katie last night, and my gay roommate Derek wanted to come along. We were getting along great, but Derek kept acting like a sad little puppy dog and was pulling the attention away from me. He peacock blocked me!