You couldn't take an educated shit!

When someone with very little knowledge on the subject matter tries to come up with a hypothesis but really doesn't know jack crap.

Originally used in the Tourettes Guy video "Buried Alive" (December 25, 2020), with one of the skits being Tourettes Guy and his son trying to fix a broken washing machine.

Tourettes Guy: "Damn it! The repairman will probably charge me $50 just to look at it!"

Son: "Well, maybe, uhh... maybe I can take a look at it."

Tourettes Guy: "WHAT"

His Son: "Maybe I can have a look at it."

Tourettes Guy: "You don't know how a washing machine works!... How're you gonna figure out why it won't start?"

His Son: "Well, uh... I could take an educated guess."

Tourettes Guy: "YOU COULDN'T TAKE AN EDUCATED SHIT!"