A Toma
A guy who's so dumb, he thinks he's a genius, and everyone else thinks he's a total idiot who got a nickname.
Text: 'Hey, I just found out I'm called a Tomas. It's a nickname for dumbasses.'
Text: 'I'm not a dumbass. I'm just a Tomas.'
Text: 'I'm a Tomas, and I'm not a dumbass. I'm a genius.'