Colossal Crab Asparagus Bisque

Name: Colossal Crab Asparagus Bisque
Ingredients: 2 1/2 quarts chicken stock; 2 bay leaves; 3 pounds asparagus, cut into 1-inch lengths (tough ends removed and discarded); 8 tablespoons (1 stick) butter; 4 white onions, chopped; 5 stalks celery, chopped; 3 carrots, peeled and chopped; 2/3 cup all-purpose flour (approximately, or as needed to create roux); 1 pint heavy cream; 1 pound colossal crabmeat; 4 tablespoons mayonnaise; 2 teaspoons freshly chopped thyme leaves; Salt and freshly ground black pepper; 1 lemon, juiced plus 1 or 2 lemons cut in wedges, for garnish