Preheat grill to medium heat. Once hot, be sure to scrape the grates clean.
After cooking the bacon in a large skillet, add 1 T. of the fat to your burger mixture and drain the rest. Place the same skillet, with residual bacon grease, over medium heat and saute the frozen corn for 5-6 minutes until cooked. Remove from heat.
In a bowl, mash the avocado, lime juice and salt until well combined. Fold in the crumbled bacon and corn with a spatula. In a separate large bowl, gently fold together the meat, bacon fat, and rest of burger seasonings, including the cheese pieces. Loosely form into 4 patties. Grill over direct medium heat until desired temperature is reached.
Medium = 160 degrees
Medium-Well = 165 degrees
Well = 170 degrees
To serve, halve your buns and place a slice of cheese on one half of each. Place the bun halves, cut side up on a sheet pan and broil them until lightly toasted and cheese is beginning to bubble. Top with cooked burgers and plenty of bacon & corn guacamole.