An aid for young straight males in order to define the age of a young looking peice of ass.
It is often done silently, accompanied by a knowing smirk, and a 'thumbs-up' by at least two people. It is now considered to be ok to go 'tap that ass'.
It'll hold up in court as well.
Jed: Look at that mate! she looks a bit young though....

Gaz: I'll TWO MAN RULE it.. (knowing smile, thumb up)

Jed: Allllrrrright! (Thumb up)
by Jeddycakes September 17, 2006
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