Mop

Slang word with an unknown definition. Can be used as a noun, a verb, an adjective, and a pronoun.

Example 1: "That's so mop!"
Example 2: "This is very mopped."
Example 3: "That looks moppy!"
Example 4: "SO moppin'!"
Example 5: "Even moppier."
Example 6: "That guy is totally a mopper!"