The context of the following conversation is The security guard tried to tackle Riley, but Riley got free of the guard.:
Riley says Hey, I'm going to steal this candy bar..
The friend responds What?! Are you crazy?!.
Riley responds Nah, it's fine, watch! Oh, crap! the guard saw me!.
The friend responds Riley, wait! This is crazy!.
Riley responds Ha ha! He tried to tackle me, but I got away! See you later!.
The friend responds This is insane! You need help!.