To say two contradictory things to a person and then walk away from him/her.
In a word, to confuse the shit out of someone.
Person 1: Yo bro let's go to the movies tomorrow yesterday.
Person 2: Wow that sonuvabitch just oxymarooned me.
The color of oxygenated blood; someone with more brain damage then your average oxymoron,3 misleading words together like post-war preview,or little big dwarf,ice- cold- hot- chocolate,anti-army-intelligence.
Damn Earl here I am bleedin` lak a stuck hog,but ain`t it a purty shade of oxymaroon?