Top Definition
1-A word used to express any kind of emotion.
2-The god of the religion, Yibism.
3-True goodness.
4-Greeting among friends/family.
*just took a long piss after holding it in for 3 hours on a road trip*
"ahh... yibaaaa."
friend1- "yi"
friend2- "ba"
by Doffy July 16, 2004

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