I can't talk - A silly way of saying your mouth is stuck and you're too dum

A silly way of saying your mouth is stuck and you're too dumb to fix it.

I can't talk, my tongue is stuck to the roof of my mouth and I'm too lazy to pull it.

I can't talk, my brain is on vacation and my mouth is on a break.

I can't talk, I tried to speak and my mouth just gave up on me.