Right around the time Lorde was hitting it big, I was with a bunch of my sister-in-laws watching some award show, and she comes on and starts singing. One of the SIL asks "who is that?" I go, "that's Randy Marsh." Well, several of my nieces and nephews suddenly look at me, and I can tell they got the reference.
I remember one time they had a power outage so they were not able to get the episode done in time.
EDIT: Found an article about it....
Matt And Trey Make History Blowing ‘South Park’ Deadline, Blame Power Outage