I thought this would be a more difficult question than it actually is. I once I gave it a minute of thought, the answer was clear: listen to a bad song.
Really, it’s mostly a matter of time management. If you have to watch a movie, you’re stuck while that movie is on. Even with a movie that you like, it’s going to limit what you can do. With a song, that could just be playing as you go about your day. Plus I figure that after listening to a song long enough there’s a decent change that it will eventually grow on you and so then you’ll like it. That’s less likely to happen with a movie, unless it’s one of those movies that so bad it’s almost good.
Like, for example, SUPERMAN IV: THE QUEST FOR PEACE. That movie is god awful, but I own it on DVD and found myself occasionally watching it just to laugh at the bad special effects and lame acting. There’s also the 2011 version of THE THREE MUSKETEERS, which I didn’t like for some reason why I first saw it. But then I ended up catching it later on cable and re-watching it, and I found myself liking it.
But more often it’s the other way around. I wonder if I’m the only one like this in that, sometimes, I’ll see a movie in the theater and enjoy it while I’m watching it. But then afterwards I’ll think about it some more and I’ll start noticing multiple flaws which then lower my opinion of the film. Some high profile films that this has happened with are STAR TREK INTO DARKNESS, AVENGERS AGE OF ULTRON, INDEPENDENCE DAY RESURGENCE, STAR WARS THE FORCE AWAKENS. The Independence Day sequel, in particular, is one where almost as soon as I walked out of the theater I began to change my mind about it. I think by the time I got home that day I had changed my mind from That was awesome! to On second thought, that sucked!
But a lot of songs have grown on me, after originally hating or just not liking it. So I’d take that option.