Short for
underwear gays,
fellows whose favorite recreation is
strolling around in their boxer shorts, or in underwear. Being in underwear has a way of making a fellow look gay, hence the term.
Jake and Dwayne are quite the U gays, always strolling around in their boxers. They have even made some videos on themselves in their boxers: Jake and Dwayne, the U gays,
the snowman, Jake and Dwayne, the U gays,
wild hair, Jake and Dwayne, the U gays, the microphone, and finally Jake and Dwayne, the U gays, six
cuppycakes each instead of seven.