Car-bro-loading is the act of cultivating mass the night before a big workout by going out with your bros and loading up on carbs via high life beers, pizza, and Chinese food. Commonly practiced in the Mid-west.
Bob-Ay: Yeah, Friday me and my roommates are going out for 50 cent beers and we are gonna go car-bro-loading.
Uncle Andy: Car-bro-load?
Bob-Ay: Yeah, get our carb on then Saturday we are gonna tear up the gym.