A closeted gay man who betrays his own people.

Based on the phrase "Uncle Tom" (a black man who betrays his own people) and the recognition of "Bruce" as a stereotypically gay name.
A gay senator who votes against gay marriage rights is one example of an Uncle Bruce.
by ShakeGentlyServeChilled March 21, 2008
Get the Uncle Bruce mug.
A trans person who has not had sex reassignment surgery.
Some Uncle Bruce on twitter has no standing to be speaking for the trans community.
by crookt December 31, 2022
Get the Uncle Bruce mug.