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A boy who is a skinny shitling but believes he is hench. A bubai therefore lifts too much at the gym and ends up with musculoskeletal injury
"Dude why are you limping?"
"I'm such a freakin bubai and didn't realise it so I hurt myself at the gym man"
by Diggy123 January 17, 2014
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2
"Bubai" is an expression. People are called "bubai" if they want to avoid an uncomfortable conversation by using misleading information about something that's not related to the current subject at all.
1."Don't be a bubai all the time. I know you're trying to change the subject".

2. -Where were you last night?
-You look so pretty! Is that a new dress?
-Well thank you! Oh no, you didn't! Stop being bubai, that ain't gonna work.
by Dumdum#1 February 23, 2018
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