Was it correct battery horse staple or battery horse correct staple?
I use passphrases almost exclusively. The key is picking words at random - phrases are easy to guess, though sometimes I pick them because, to me, they're easy to remember.
"Areyouopposingshadowmoon?" is an incredibly secure password, and it's very likely that no one would ever 'guess' that phrase, but it's also highly easy to remember (because 1997 engrained it into my head).