ultra nub

One who constantly bails on plans. Especially if such plans were set a week or more in advance.

"She definitely bailed for the fourth week in a row, she's an ultra nub."

Ultra Nub

Someone that has no idea what he is doing, and can't help you in any way without becoming more lost. Usually Ultra nubs have the name Chris

Damn that guy is an "Ultra Nub" he must be a Chris.