Joke Classes

Joke Classes are unofficial classes not available in the official class system.

SSS, SSSS, and so on
S is good, SS is better, so continuing that pattern and taking it to its logical extreme, you just keep slapping on S after S after S. SSSSSSS. SSSSSSSSSSSSSSSSSSSSS.

F Class
In the official class system, D is as far down as one can go. Similarly, in the real world, F means "Failure". As such it's meant to imply that someone is so bad that they are a failure and break the class system.

You can maybe add on more Fs similarly to how the SSS class works. FFFFFF.

Note: The Unofficial Class System uses F in a non-joking way

G & G+ & GG Class
The G stands for Galator. The G+ or GG means "better than Galator".