I'm fighting for my fucking life - This phrase is for when you laugh so hard you think you're g

This phrase is for when you laugh so hard you think you're gonna die, but also when you're scared out of your mind and can't catch your breath.

I was laughing so hard I thought my ribs were gonna split open.

My friend saw a cat in a tutu and lost it.

I just watched a guy eat a whole pizza in one bite and I couldn't breathe.