The most annoying song is stuck in my head!!!: baby- Justin Beiber. Dont get mad if you like this song, it's just my honest opinion
Also I have this one part stuck in my head from the llama song...
"I was once a treehouse i lived in a cake, but i never saw the way the orange slayed the rake! I was only 3 years dead but it told a tale, and now listen, little child- to the safety rail!"
Also, the badger song where it goes "SNAAAAKE A SNAAAAKE, Oh, OOOoooh ITS A SNAKE!"