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1.
awsome way of sayin yes yeah definatly lets do it :)
hell yerah
by N1cK75numa March 26, 2010
 
2.
A way of saying you've gone mad over something. Usually said in an extended "YYYYEEERRAHHHH".
"Lookit them drums! YERAH! YEERRAHHHH"
by Vanz May 25, 2007