certifiable 

British slang for "insane". Derived from "certifiably insane".

The evil genius villains in James Bond movies appear to be highly intelligent when, in actuality, they are certifiable.

certifiable by Li'l Scotty October 7, 2005

Certifiable 

(adj) Completely NUTS. Past the point of "ticking". Ready to flip OUT.

Oh shit! That chick's been off her meds for a few days now! She's certifiable!

Certifiable by starlight88 February 4, 2010

Facebook Certifiable

The process where you can tell just how nuts someone really is just by the whacked out Facebook status updates they put up.

Dude 1- "Wow that girl is hot as hell. I'm going to go talk to her."

Dude 2- "Watch out man, she's Facebook certifiable. She's a real nut job. Proceed at your own risk."

Facebook Certifiable by O.G. Junior Mint May 29, 2015

Certifiably Insane 

A degrading term that stubborn girls say to get under your skin about a mental disorder, or perhaps you went to the mental hospital for help.

Your girlfriend is certifiably insane, shes incrediable because of how crazy she really is.

Certifiably Insane by MRS. Caitlin Crisis June 2, 2015