Wild Wasteland is one of the traits that one can select when creating their character at the beginning of Fallout New Vegas. This is a trait that will enable the silliest encounters within FNV, meaning that strange and unexplainable things could happen throughout your run—like Monty Phyton-themed gags where the player gets ambushed by a gang of old ladies armed with rolling pins. It doesn't do any harm if you do enable the run, and it can be a lot of fun when you do come across one of these weird encounters, so we would urge you to give it a try.