If you're a fan of Roblox and love memes ... television show "Arthur," in which the titular character clenches his fist in anger. It's often used to express frustration or disapproval.

The Magma Fist is a frequent move used by this boss during which he throws a huge fire fist toward you. This can also be avoided if you maintain some distance. The Magma Admiral (Image via Roblox) ...