Jay

A person who is literally a ball of fat.

His hands are so greasy that shaking his hands would immediately give you type 2 diabetes. I would say he walks around assaulting girls but he's 8000 lbs so he can't walk. He masturbates several times a day and is proud of it. He tells girls that he masturbates daily in order to impress them. He threatens to kill himself whenever a girl denies him upon asking them out. He's probably made a food charity for himself. He argues by saying "because it is" or "because I am" and uses insults such as, "you're stupider than me" and "I am much smarter than you."
He gets into fistfights at school and ALWAYS loses, but goes on to tell everyone that he won despite the fact that people who watched the match can 100% confirm that he lost.

"You're such a Jay!"
"Stop being such a Jay."
"That guy's a real Jay."