1. A true genius. In the 18th century, great attention was afforded by leegers as people were enamored by their talent and wisdom. It was in this period, the word beleaguered came to be known as the feeling one gets when in the presence of a leeger.
2. Out of your league.
3. One who loves Big League Chew.
Dude, I've been working on that problem for three weeks, and you came here and solved it in five minutes!!! Fuckin' Leeger!!!