erm, what the sigma?

an expression originating from a tiktok of a recording sent in a dm that says "erm, what the sigma?" in Squidward's (from spongebob) voice. Typically used by people who have brainrot.

Mom: "I'm sorry but i would have to confiscate your ipad if you continue watching skibidi toilet videos."

kid with brainrot: "erm, what the sigma?"