Slang/modern expression for describing nouns or verbs.
A regular term of approbation, non SAE. Equivalent of smart, good looking, etc. (origions unknown) 1978 A dictionary of South African English. Edited Jean Branford. Oxford.
SAFE, Something is genuinely good, an agreement, a greeting. Safe can be used in many contexts whether to say thank you for something, to agree with something, another way of saying hello. Safe is a very versatile word in this sense. It is very often used by the younger generation of people.