It refers to people who have never invited the person who mentions it to a certain event, outing or gathering.
"你去哪儿? bo jio!"
"Where are you going? You didn't invite me!"
Submitted July 2020 by bee
Confirmed by 2 people
Bak chiu tak stamp
On Rare Occasion
(eyes have been pasted over with a stamp) •
Taking amusement in someone's inability to see things clearly (both literally and figuratively).
"Bak chew tak stamp?"
"Can't you see it?"