Slang refers to words that are easy to understand and have local color that are summed up by ordinary people in their daily lives.

It is a dialect that is very regional (may not be understood in other places), more life-oriented, and even vulgar.

Every place has its own slang, and Cantonese slang is one of them.

For example, if you are fired and leave, Cantonese slang means "fired squid" (fried squid will roll up, like rolling out the bed).