back in the day my college friend group (~12-15 people, I forget how many exactly) held a March Madness bracket, with the winner getting the communal pot of spare change that we all had been accumulating. and the loser had to submit to a punishment agreed to by all the other people.
my friend Chaz came in last, and the rest of us banded together to decide on a punishment, which ended up being that Chaz had to spend an entire Saturday in his apartment playing the worst song we could think of on loop. naturally, we chose Simply Having A Wonderful Christmastime, which was an obvious pick among all of us, including several musicians in moderately successful local bands, as the worst song we could think of.
we had just spent the previous holiday season constantly trolling each other by leaving recordings of it on each other's voicemail, standing outside each other's bedroom windows playing it, that sort of thing. we called it SHAWCT for short.
Chaz underwent the punishment, and when it was over he told us that all the friendly teasing about the punishment wasn't actually all that funny, and that if we instituted a punishment like that the next time, he would refuse to participate. so we dropped the punishment aspect, and only stuck to rewards from then on. so I guess you could say that song changed the course of history for our March Madness bracket (which has finally started to die out in the last few years). to say that someone got SHAWCT'd implied a situation of extreme duress, requiring tapping into one's deepest reserves of serenity and resolve.
even to this day I'll sometimes text him only the letters SHAWCT. he only recently has started to find it humorous, and even then he'll only find the whole situation he went through humorous, and will get stone-faced and say something along the lines of "seriously, fxck that song, I'm not kidding." let this be a lesson to those who would seek to downplay the horror of that song.