Top Definition
A spontaneous squeal of excitement! like Hooray but better!
"YAYBOT! I won the lottery"
by Ms. Terious October 16, 2009
1 more definition
11 Words related to yaybot
A person who is so excited they could be a robot that says yay.
Person 1: Omg Sally is so excited.

Person 2: Holy Crap i hope she doesn't go yaybot on us.

Person 1: holy shitcakes.
by Chaotic Angel May 19, 2009

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