You know 5 7 5: it's the syllable pattern for each line of a haiku poem. Such as
This litter is wrong. (5)
I don't like it on my feet. (7)
Poop on floor, again. (5)
oops. I guess you can tell what your friendly curator has been doing lately. I'm a lousy poet anyhow -- why don't you check out these much better cat haikus?