Burden to Bear is a perk in the Fallout: New Vegas add-on Lonesome Road.
The wastelander with the most gear wins! (...or at least survives.) You can now carry an additional 50 pounds of gear. This perk also stacks with Strong Back if you have it.
Behind the scenes
Chris Avellone created a perk idea contest via Twitter for FNV T-Shirts. One of the competition winners created the perk Burden to Bare which would have allowed the player's movement to not be restricted based on armor type (heavy, medium, light).