1. (n.) A name with roots in both Russian and Korean, it's bearers tend to be both immeasurably nerdy and ridiculously good-looking.
2. (v.) the act of scaring people with the sheer epicness of one's nerd powers.
1. Ryan: "Hey, Youri's back."
Osman: "But was she ever gone...?"
2. Dude, you totally Youri-ed that guy with your guitar hero skils.