mad jelz
a form of jealousy so strong it makes you want to scream, throw things, and maybe even swear at the person who got what you wanted
I got a new game and now my brother is mad jelz and is screaming at me.
She got a good grade and now my friend is mad jelz and is throwing erasers at her.
He got a new phone and now my dad is mad jelz and is threatening to take mine away.