2) Something that is too weird to be down to chance. See Contamcidence
3) Anything out of the ordinary
Person 2: "Yeah i know that was so contam."
2) Person 1: "Last night I had a dream with this girl I used to fancy, and then today I bumped into her. How contam is that!"
Person 2: "Awww man that is so contam!"
3) "That breakcore tune is so contam!"