Sting Like a Bee

Sting Like a Bee is a perk from Van Buren, the canceled Fallout 3 project by Black Isle.

Description
This perk gives the player +5% critical with Unarmed only. It can only be obtained by beating Bear in a legitimate fight.

Behind the scenes
The name of this perk is a reference to Muhammad Ali's fighting style which he described as "float like a butterfly, sting like a bee".

Source
Bloomfield Space Center design document