Haachi
A Haachi is a guy who thinks he's hot, but he's just a sweaty, vaping, cheating, gay mess who makes everyone look good.
My teacher called me a Haachi for cheating on my test and then asking me out.
That guy is a Haachi, he vapes, flirts with everyone, and still can't do a sit-up.
My brother is a Haachi because he flirts with my dad and still can't beat me in a race.