I was just thinking about Killer Tofu
Now you get to think about it.
When I was a kid, I had no idea what this song was even parodying - I had no idea who the Beatles were, so "The Beets" meant nothing to me, and I thought it was a pun on musical "beats". I picked up on the "A-E-I-O-U" joke as well but I was genuinely not sure what tofu was, so I didn't understand most of the song. Furthermore, for a period of time in my childhood I thought cottage cheese and tofu were the same thing. (My mom ate a lot of cottage cheese.)
I have a difficult time with music that has unclear lyrics, because as a kid I was told repeatedly by my parents that popular music had wicked and inappropriate lyrics which would cause its listeners to become Bad, somehow. I was terrified of most songs because I often had a hard time processing the lyrics in the music and was very frightened that I might end up enjoying a song with wickedness hidden inside it. I remember liking Killer Tofu a lot because its lyrics were so clear. They were funny, sure, but I could understand them, so they were safe! Even them being inside a kids' show was not enough for me - I needed my kids' show music to also be perfectly enunciated and simple for me to cognitively process!
This preference continued into my late teens and adulthood. I am pretty sure that I liked the Talking Heads and The Decemberists specifically because I could understand what the vocalists were saying. I got really into listening to movie soundtracks and learning to play them on the xylophone because there are no lyrics in most of that music and I didn't have to stress about it. Even now I do struggle a little bit with lyrics I can't easily understand.
I guess the moral of the story is that you shouldn't frighten your children with stories about lyric sin, or you will permanently affect their relationship to song. Oh well!