Verb: To be beaten very badly at something.
Andy: "I just took some kid to school on Black Ops, I beat him 30 - 2 in a 1v1."
Greg: "What a badkid."
Paul: "I got taken to school by some guy on MW3 last night. He got 21 kills in one game of search and destroy."
Dave: "Wow, he must be MLG."