Popular "secure" Passwords: Hard to remember, but easy to guess for computers
From http://xkcd.com/936/
However, howsecureismypassword.net says that correcthorsebatterystaple would be cracked "instantly" whereas Kapersky's password checker says, that it would take 892 centuries to crack it. Obviously howsecureismypassword.net is aware of that comic and put that password in its database.
Also I would suggest not to build a normal sentence with "subject verb object adjective", which would make it easier for a computer algorithm to successfully try. Just put 4 or more random words like the comic suggests and try to remember them with a picture. Or password manager.
Good read: http://lifehacker.com/5937303/your-clever-password-tricks-arent-protecting-you-from-todays-hackers
If you want to make it a little bit harder, thrown in a capital letter and a number or special character. Anyone trying to crack your password is either going to iterate through all character combinations, common passwords, dictionary words, or some combination of those.
so the password "dogs like bacon today" is harder to steal or guess then say Drag0n4921?
It seems so, you can verify this e. g. here: https://howsecureismypassword.net/ or here https://password.kaspersky.com/
See also again my post, which I updated with your question in mind.
yeah i look around the web after reading this cause i was curious, and i found out about dictionary attacks so i went and got a password manager.