The rain in Spain falls mainly in the resaca

Surreptitious - done, made or acquired by stealth. Synonym: clandestine, secret. (Webster's)

Now you know and knowing is half the battle.

I'm drinking a glass of water and going to my bed where I will try very hard not to dream about lakes, rivers or resacas*.

* (A resaca is an elongated inlet of water. Brownsville is full of them. Apparently that word is not in the Webster's dictionary.)