Gently stir together the cheddar cheeses, cream cheese, pimentos, mayonnaise, Worcestershire sauce, garlic, cayenne, salt and pepper in a medium-sized bowl.
Fold the mixture gently to combine until uniform.
Taste and adjust for salt and pepper. Add in a dash or two of hot sauce to your preference.
Divide the pimento cheese between 4 slices of white bread. Spread evenly, then top with remaining slices.
Slice into into triangles or smaller squares and serve.
