#1595: 30 Days Hath September explain

[Cueball is thinking.]

Cueball: Thirty days hath September, April, June and November

Cueball: All the rest have 31—except February, which has 28, and leap year makes it 29.

Cueball: Wait, which month was I listening for? Oh right, October.

Cueball: Did I say “October” in there? Now I can’t remember.

Cueball: 30 days hath September…

I get stuck in this loop every month.