D'oh!

But at least I learned a new word from this embarrassing experience: маяться

On second thought, make that TWO new words: also маятник, which means "pendulum." Actually, I'm sure I've learned that word before, but then forgot it, because I rarely have an occasion to talk about pendulums in any language...

(According to wikipedia, Edgar Allen Poe's famous short story "The Pit and the Pendulum" is called in Russian "Колодец и маятник" -- колодец being, usually, a "well" from which you get water.)

Anyway, the meaning of the noun маятник makes the verb маяться easier to remember -- if you can imagine being so bored that you're watching a pendulum for entertainment!