by RiichThaKiing March 07, 2019
slang for a penis, short for "the hero", shorted to "t'hero", and eventually to "thero". Sometimes found in aslightly larger size, then referred to as a "royal thero"
He stood drinking a beer in tight pants in the gay bar, hoping a cute guy would notice his royal thero.
by Little Devil November 27, 2007