The slang is an exclamation word that a lot of Nigerians use.
A delicious tea latte served either hot or cold, with honey, vanilla and spices that has become popular in coffee shops and homes everywhere.
Meaning: Chai name means: Life.
A "Chai" is a grate leader he will always try and help you he will try his best to lighten up your day , very profound in hygiene. Cares a lot about people. mostly up for anything. He sometimes messes up but will look upon that mistake to improve. likes to have a good time ;) . always trying to improve his surrounding. he thinks about others before him self. Don't get on Chais bad side ( its hard to do ) but if you do he will make sure you get punished. Chai is very secretive you might think you know him but in reality you barely do. he can keep a secret . he loves to swim . he likes alone time . he is not like most guys (who only want sex). chai can be very stubborn and indecisive . but over all is a very good guy .
(Bob) "Bill do you have those T.P.S reports ready for me yet?"
"I had a chais of a time last night"