F-Peen - Fail Penis
The measurement of ones failure to secure something.
The bigger someone's F-peen is, the more they f*cked up.

(Derived from the word e-peen, meaning ones internet ego, and originated from Defcon 20 Comedy Jam)
Pentest hacker: Damn belkin's F-peen is HUGE! You have SQL Injection, MIM, and they have the weakest encryption on the planet!
Fed: You're coming with me.
by Limber Pelvis October 21, 2014
Get the F-Peen mug.