Preheat oven to 400 degrees F. In a mixing bowl add the mayonnaise and crushed clove of garlic mix well then set aside. Slice the tomatoes and set aside. Rinse and pat the lettuce dry and set that aside .
On a rimmed baking sheet place a piece of parchment paper to cover bottom. Lay out the bacon on the sheet in a single layer. Once oven is preheated put the tray of bacon in for 15-18 minutes turning 1 or 2 times until bacon is cooked to whatever crispiness you prefer. When bacon has finished cooking , place on a plate covered with a few paper towels to absorb the grease.
When bacon has been remove from the oven, toast the bread. Once the bread is toasted, spread on the mayonnaise garlic mixture, you will have some left, store remainder in the refrigerator in a sealed container, its good for a week. On one slice of bread stack the lettuce, tomatoes and bacon. Place the other slice of bread on top then flip the entire sandwich over so the bacon is on the bottom of the stack. Using a sharp knife, cut sandwich in half and serve with chips or fries and a pickle spear.