Lum is Botswana slang for relaxing/ chilling when you are wasted baked. It defines the sleepy, drowzy feeling you get at the end of a large smoke up with your mates. Incorporated into such expressions as:

lum means "lonesome" in american english language and "lonely" (British English language)

(-ming)(Verb) Laughing and cumming.

Chinese for like. Term commonly used in Chinese american slang on the east coast.