SNL was making a pretty sharp point. Slang has originated in the Black community for decades, though etymologies are inherently elusive. Unless a slang term emerges from a popular movie, pinpointing an exact date of birth is difficult (hence the question marks on the tombstone). Cap, more frequently invoked in its negative, no cap, achieved new levels of prominence after the Atlanta rappers Future and Young Thug immortalized it in song. Of course, slang can come from other subcultures. The recently departed SNL cast member Bowen Yang, for example, got a lot of comedic mileage out of gay memes and references; blame him if you’ve recently had to explain to your parents what “poppers” are.