Cook the bacon until crispy; drain on paper towels.
Toast the slices of bread until golden brown.
Spread mayonnaise on one side of each slice of toasted bread.
Layer lettuce, tomato, turkey, and cheese on the first slice.
Add the second slice of bread on top, mayonnaise side down.
Layer more lettuce, tomato, and bacon on the second slice.
Top with the third slice of bread, mayonnaise side down.
Secure the sandwich with toothpicks in each corner.
Cut the sandwich into quarters diagonally.
Serve with pickles or chips on the side.