A question pertaining the feasibility of a situation or to ascertain the possibility of an occurence.
i) Are you sure?
ii) Can it be done?
iii) To punctuate sentences
iv) To make a rhetoric statement
v) Yes or no?
vii) May I?
a) Naga : Let's go karaoke this weekend. I've been practising and I think I can hit those high octaves on that Bon Jovi song we always sing.
Nivel : Huh. Can or not.
b) Queenie : Sweetheart, I thought of what you could get me for Christmas. A new grand piano! Can or not?
Kingston : Cannot.
Can or not is one of the more common phrases you will find being used in the average Malaysian's vernacular. Its uniqueness is that it can be a question, punctuation mark, rhetoric or replacement for outdated terms like please, could or may.