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1.
A male family member to whom you are related who seeks out other gay uncles. Opposite of Lesbian Aunt.
Gay Uncles--you either got one or you are one -- or both!!!
by Mark Edward May 09, 2006
 
2.
The act of containing or having ownership of a gay uncle.

If somone where to make a gay coment you might say things like:
HEY! watch it... i have a gay uncle,
or
Hey i take that offensivly i have a gay uncle.
by YOurgayuncle September 19, 2005