Ok, perhaps it's more accurate to say it's the most "juvenile" new feature in Halo 4, the first-person shooter developed (for the first time in the franchise) by 343 Industries.

We already knew that the infamous "victory crouch" would return in the latest Halo title, but perhaps we didn't expect it to be quite like what you see above. Enjoy, courtesy of Rooster Teeth.

Achievement Hunter : Halo 4: HoloHump - Easter Egg [YouTube]