To kick Dinesh's ass and steal his bitch. Usually for purposes of taking said bitch to high school prom. Sometimes also used in reference to Taiwanese persons who have a tendency to say "shiee" and "yiee" and "wut da butt". Friendly yet in Northern California and often unavailable for enjoyment.
Dude Mengkai totally Mengkai'd Dinesh and took Cozort to the prom. I can't believe he totally Mengkai'd and ended up in California, though.