Ne Ne Ne Ne...

Ne Ne Ne Ne... is a challenge added in the Fallout: New Vegas add-on Gun Runners' Arsenal.

Obtaining
To complete this challenge, you must cripple five right arms with any form of shotgun except the Sturdy caravan shotgun; any ammo can be used but slugs (Needs confirmation).

Behind the scenes
Likely a reference to Clarence Boddiker's taunting of Alex Murphy in Robocop before the then-infamous shotgun scene.