South Park Steam What Episode Of South Park Does Butters Dad Tell Him To Wipe That Stupid Look Off His Face?

What episode of South Park does Butters dad tell him to wipe that stupid look off his face? - south park steam

It is a consequence of South Park Butters's father tells him to delete that stupid facial expressions and Butters says things like "It's my normal face" or something like that. Butters is also largely based on the episode and I think that ended his father with a bag over his head. Which episode is it?