The killing was 1 year after. So the episode after Rafi and Dirty Randy's episode is 1 year before, present time.
This show sucks man. It didn't used to always start off with a skit about fart jokes and pee-pees did it? It's super juvenile now. I swear season 2 of this show was the best season of any show of all time, but watching this... there's no way this show was ever good. I must have been crazy.