1. Phrase usually used to indicate a state of crunkness which can no longer be contained.

2. Also used to express agreement, approval, and/or satisfaction of a high level.

3. Indicative of a lack of vocabulary, supposedly mirroring Lil Jon's inability to speak more than one word at a time. From a Dave Chappelle skit.
Up in the club with his homies, when a certified twenty asked John to dance, he told her "What??? Okay. YEAH!"
by TrojanBoy August 3, 2004
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derived by lil jon in the usher video "yeah" it means that mr jon is happy....
saying yeah really means u are happy
by ashleys lil bro February 27, 2005
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