When I was in middle school and lower high school, having songs that I didn't like or were too kiddish stuck in my head was pure torture, and usually made it really difficult for me to concentrate in class. Here are a few scenarios I can remember:
When I was in seventh grade, and it was near Christmas time, I had a song from Rudolph the Red-Nosed Reindeer stuck in my head, and it was really embarrasing because that song was from a little kids' movie, and I was around grown-up 12 and 13-year-olds. Luckily, I had an aide by my side, who, when I was on the verge of having a meltdown, let me take a few minutes break from class and took me into a separate room until the meltdown trigger, the song in that case, went away. She was really sweet too.
In sixth grade one time, a bunch of kids my age would walk up to me and sing "This is the Song that Doesn't End" from Lamb Chop's Playalong in my face, and when they did, I would yell and scream at them to stop because if I didn't, then the song would play over and over faintly through my head, and I would have major difficulty keeping it together in class.