Gai boi
A gai boi is a guy who isn't gay but acts like a girl. He probably wears make-up and screams at his mom when he fails math.
My friend said, 'He wore mascara to the football game, he’s a gai boi.'
Text from my mom: 'Your cousin is a gai boi, he cried at a Disney movie.'
DM from my brother: 'He wears a skirt, he’s a gai boi.'