Fishy Fish is some sort of thing. (Also my first FGism!!!)
Definition[]
(Requirement: Read ∀ 0+).
Given a certain definition which would require infinite effort to do, it can be said that it is the "biggest concept" in a verbally informal way. As usual, one can make new "biggest concepts," obvious examples being Dek objects and Nullbound.
One could make a verbally informal concept that would also requite an infinite effort, this one being twice as verbally informal. In comparison to verbal formality, this would be the equivalent of yelling to everyone your number is the biggest or hitting them with a metal pipe.
There would also be a definition that would require infinite effort even while being twice the verbal informality, Also thrice, or infinite times.
Fishy Fish is the maximal concept that could be made given a Informality-Lock.
Analysis[]
It hierarchizes about all degrees of informality a definition may have, so it is larger than any other informal concept.
The rest of arguments are already explained in ∀ 0+.