What is anti-dank?

The complete opposite of the adjective 'dank', to describe something that is severely not cool, not legit, and not in any way a stimulant.

Stoner 1: "Dude, have you tried the grape flavor?"
Stoner 2: "Nahh man, that shit's naasty! Like totally anti-dank, brah."

anti-dank - meme gif