When I was a child, there was a kind of an earworm song called "Little Rabbit Fru Fru" which my sister and I sang with great enthusiasm, partly because it seemed to annoy our mother so much.
I thought of that song for some reason, recently – I think one of the songs in one of the role play texts I was teaching featured a similar melody.
I found an infinite number versions online, with variants like "Little Bunny Foo Foo" and others. Most of them are just as earwormy as I recall, but there were some unusual renditions too. I particularly enjoyed one slightly postmodern version, rendered on the basis of a children's book which retells the story of Fru Fru AKA Foo Foo, with excellent Scottish enunciation.
[daily log: walking, 6 km]