Someone who ruins things. From parties to movies this person ruins them all.
Becky is such a rooner! She was locked out of her house and couldn't get her bathing suit so we couldn't go to the pool.
by The Rooner July 21, 2008
A complete bitch that enjoys hooking up with lots and lots of guys, usually just for the hell of it.
That rooner over there is unstoppable. She hooks up with at least 3 guys every weekend without fail.
by Tommy938493 January 07, 2008