Brown, drain, and rinse the ground chuck. Wipe out pan with paper towel if desired. Return meat to pan. Add can of Manwich or other sauce. Simmer til warm all through and a little thickened, as desired.
Meanwhile prepare fillings and toppings. We like: shredded cheese, lettuce, chopped tomatoes, onions, and olives. Provide hot sauce if anyone likes a bit more heat.
Put warm meat and sauce mixture on table along with shells, toppings and fillings so everyone can make their own taco. Don't forget spoons and tongs etc.
Fun, easy, and delicious!