Bear Grylls (3.5e Trait)
From D&D Wiki
You are basically Bear Grylls now.
Benefit: You can eat literally anything to sustain hunger, +4 to survival, +2 to Swim and Climb. You also don't need water anymore, you drink your own urine now.
Drawback: You take a -4 on any charisma, diplomacy, and bluff checks because you dislike interacting with people. You'd rather stay in a tree drinking piss for the rest of your life.
Roleplaying Ideas: Out from the womb you came, the survival expert, you macheted your way out of your mothers uterus. Its you against the harsh world now.