Is it the eensy weensy spider, or the itsy bitsy spider? Which one went up the water spout?

Some days I think I may have lost my mind, just set it down somewhere like a sack of marbles and wandered away from it.

How can I not remember such a little thing like that? (Could it be the sleep deprivation? Or the having eight million other things to remember at all times? Or maybe my brain has run out of space, and nursery rhymes were at the top of the to-go list.) And why does it bother me, not remembering such a trivial little fact? Nothing, I think, depends on my accurately singing the lyrics of a four-line song.

And yet.

Itsy bitsy? Or eensy weensy? I think it’s itsy bitsy.