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N.Irish for LAD.

A term of friendship and endearment.

Used to address everyone and anyone in your immediate company.

No sentence is truly complete without it.
"She's qwerr an' chilly th'day, baiiii"

"Get her bucked, baiiii"

"Hey baiiii, pass the gravy baiiii"
by HeheFippppy November 25, 2013
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2
A Finnish way of typing "Byeeee", used widely by young people to humouristically express disrespect to e.g. a person when parting.
"Hah last day of school tomorrow, all I can say is 'baiiii'"
by maplehill March 03, 2018
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