Easy to remember iPhone passwords?

Ok so my friends like to go on my iPhone and hack my Facebook and put weird pictures or send messages to random people and every password I put on there they figure out so if you have any ideas of an easy to remember but hard to know iPhone passwords

Try nvidia, hannah, bob, 123321, carpet etc

Just do your name backwards

Wordpass

theyll never guess it

The easier to remember, the easier to be hacked.
Test password strength at https://howsecureismypassword.net/

"E.T.R.P. Uses a random generator and a special algorithm written from the ground up to generate highly secure passwords that read more like sentences (rather than obscure letters/numbers). Although the generated passwords may seem strange to you at first, our research has shown that it will make memorization easy and fun, in no time at all.

In addition to generating its own passwords, E. T.R.P. Can also save any existing passwords you already use… Just type them in, it's that easy! E. T.R.P. Can hold up to five passwords and their corresponding location of use (i.e. Facebook, Gmail, Flickr, etc).

E.T.R.P. Also includes a lock screen to protect your passwords if your phone were to be lost or stolen… Read for to details: http://iphonedevsdk.com/forum/shameless-advertising/88316-easy-to-remember-passwords-e-t-r-p.html"