A word added to Urban Dictionary so that it can be used in Scrabble from here on out. It can also be used as an insult, as if calling someone a vagina.
Bruce: (Puts down vagum on the scrabble board) Is vagum a word?
Steven: No, Vagum is definitely not a word.
Bruce: I'm looking it up in the dictionary!
(Not in the dictionary; ergo, I'm adding it)
Used as insult...
Lindsey: Bruce is such a vagum!