Cook bacon in a small skillet over medium until crisp, turning occasionally, about 8 minutes. Drain on paper towels. Spread 1 tablespoon mayonnaise each over two slices of bread. Top one slice with tomato slices, lettuce, and bacon; top with second slice of bread, mayonnaise side down. Top second slice of bread with turkey. Spread pimiento cheese over third slice of bread and place on top of turkey to make a club-style sandwich. Cut into triangles and secure with toothpicks. Serve immediately.