Hong Kong Code-mixing Dictionary

Definition: Derived from 'gut' (吉) meaning nothingness or tangerines, this is a romanised code-mixing slang phrase used to describe someone is messing about and wasting time, which purportedly comes from people in the past going into Hong Kong stores just to drink the bowl of soup called 'gut' soup (吉湯) without spending money on the food at all. 'wun' can mean to mix (混) or to transport (運).

Usage: Auntie: Stop tasting my fruits here and there! Are you wun gut?

Synonym: 運吉, 混吉

Reference: https://www.timeout.com/hong-kong/things-to-do/cantonese-slang-you-need-to-know-right-now

Definition: A Kongish code-mixing term that local Hong Kong students use to emphasize the zero mark they got in a test or exam, which they like to honour themselves with because not only a chicken egg has the shape of the zero number, but also it has become a friendly treat that they are used to eating all the time.

Usage: E.g. Oh no! I got a zero chicken egg in my exam again!

Synonym: 零雞蛋

Reference: https://en.wiktionary.org/wiki/零雞蛋