Drop onion and carrots into the CrockPot, then put your big honkin' piece of meat on top.
Whisk together rest of ingredients and pour about half on top of the pork. Pop the rest into the fridge for later.
Turn CrockPot on Low and go do something else for 8 hours.
Warm sauce on the stove or microwave.
Remove pork and shred. If you can manage to not eat it all with your fingers, put it on your bread of choice, drizzle on the sauce, and stuff it in your maw.