L mack
the worst kind of L. someone who’s so brain-dead they think they’re the best. usually used by people who are even dumber than they look.
He’s an L mack. He thinks he’s the best, but he’s just a brain-dead fool.
That guy is an L mack. He talks like he’s smart, but he’s just a total idiot.
She called him an L mack. He didn’t even know what that meant.