Add Mayonnaise (1/4 cup), Lemon Juice (1 tablespoon), Worcestershire Sauce (1 tablespoon) and Ketchup (1/4 cup) into a mixing bowl.
Gently mix together until nicely combined into a creamy cocktail sauce. Taste and add Salt and Pepper (to taste) if needed.
Place a little bit of Iceberg Lettuce (1) into each glass. Add the Prawns (600 gram) in the middle of each glass and add 1 hanging off the side for looks.
Drizzle your cocktail sauce over each glass. You can serve immediately or pop into the fridge for later. Enjoy!