A term used to congradulate someone or oneself for having come up with the ultimate put-down or having done something waaaay cool! Usually accompanied by holding up the hands in a goal-post formation.
Once, when we were on a band trip, one of our buses broke down at a gas station. The sign outside said, "Baby Chicks Are Here!" We were playing Truth or Dare and somebody got dared to go out and change to the sign to say, "Chicks Are Here, Baby!" They did, and a guy in a passing car honked as he drove past! SCORE!!!
We got to march our band right down the middle of Times Square in the Macy's Thanksgiving Day Parade! SCORE!!!
(Referring to a former choir director whose van wouldn't start, thus holding us up, in the middle of a tour because he left the lights on while we went inside and ate:) He's the only man I know who could mess up a one-man funeral procession! SCORE!!!
Have intercourse with.
I banged her yesterday! SCORE!!!