Presea and I had a fun time trying to decide just what the lyric meant. Maybe that was why it didn't seem as tiresome to me.

[Or that he just rarely gets annoyed by things like that... ]

I actually looked up what a hippopotamus was, but I still don't understand why they would make a good pet.
[Teasing a bit. That song was clearly a joke as obviously only someone like Lantis would think that would be pet material. ]