Mad Jelly
You're so jealous you're like a kid who just found out their best friend got a toy and they got a rock. You're mad jelly and you're not even pretending.
She got a new phone and I got a broken one. I'm mad jelly.
He got the last slice of pizza and I got the crust. I'm mad jelly.
They got a promotion and I got a note saying 'good job'. I'm mad jelly.