Top definition
A game on Roblox that stands for Blow Up the Noobs in which you blow up the noobs.

Often pronounced like the word Button.
Person 1: Want to play BUTN?
Person 2: I don't know what that is.
Person 1: It's a game that stands for Blow Up the Noobs!
Person 2: No thanks, I'm going to play something more mainstream.
by Murder Notebook May 07, 2018
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