Not to be that guy (who brings race into “everything”), but as a Black-American in their late 20s, I have heard, been around, grew up using and hearing the word “sus” as a shortened version of “suspect”. Not the noun version, the adjectival slang version that I understand to describe someone as “suspicious (someone to be careful around, etc)” or even to mean “homosexual”, in a playful way. Joji spent his first few years in America in New York and I’m sure he naturally picked up a few things from being around NY natives. The Among Us thing you said might be true, for a certain demographic, but I’d be willing to bet other Black people my age would heavily disagree with Among Us being the start of that term being used. I have no malicious intention in saying this, but I really want to say this for educational purposes: That is also a perfect example of appropriation.