I can't talk - A lie you tell when your brain is too full of nonsense to le

A lie you tell when your brain is too full of nonsense to let you speak clearly.

I can't talk, my brain is full of pizza and I can't think straight.

I can't talk, I just ate 10 tacos and now my mouth is speaking in Spanish.

I can't talk, I heard a loud noise and now my brain is confused.