Computer SECRET!!!!!!!!!!!!!!!!!!!!

Hi people!
I got this secret glitch you can ONLY use on Facebook.com!!
Once you get to your homepage, press these keys on your keyboard :
up, up ,down , left , right ,left , right ,B , A , enter key , left click on your mouse.
If you want to get rid of the glitch, press F5.................... HAVE FUN!!!!!!!!!!! =D

P.S.( Sorry I did'nt post last Sunday because I did'nt know WHAT to post!?! )