Opposite to the male sport of "muff diving" it simply means "diving for Cock". It can be done by animals as well, when they are rooster diving to clean themselves. The sport is mostly played by females, who enjoy a good Rooster Dive; as well as fags who are into "man meat" in their mouths and can't get enough of it.
"Look at your dog! Hes Rooster Diving!"

"Wow, Suzy where did you get that wicked rash on your cheek?", "Ohh I was rooster diving all weekend!"
by AddyMacz September 21, 2006
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