ferfnerder 

an insanely, or poorly drawn demented smiley face to suggest that you are going insane or just a plain dumbass

"Hey Jim, I see that smiley face you drew is quite a ferfnerder, you dumbass!"

ferfnerder by chickenlicker August 5, 2009

Ferflederf 

A ferflederf is anything you want it to be.

Gosh! Your such a ferflederf!

Ferflederf by Aya and Maya foreva November 22, 2010