How to pronounce 買定 in Cantonese (7 out of 9):

吹完 買定蛋糕啦
I'll blow it and buy a cake.

Cantonese Sentence Breakdown

ceoi3
to sing and play music
jyun4
to finish
to be over
whole
complete
entire
to run out
a surname
買定 maai5 ding6
buy in advance; used in gambling to refer to a 'confirmed' bet where the decision cannot be reversed once the bet has been placed
蛋糕 daan6 gou1
cake
la5
“now”, with an connotation of doubt
surprise
disapproval