ISFM 

I'm So Freaking Mad

Used when you're really pissed at someone or an inanimate object. It is used most oftenly when you can't find something

Dude, wheres my mount? ISFM right now

ISFM by T-Dawg&thecru April 10, 2010

ISFMAY 

I’m still fucking mad at you

ISFMAY I’m still fucking mad at you

ISFMAY by Jess10 March 28, 2022