1.In a large pot, boil about 1 ½ quarts of water with 2 heaping pinches of salt and 1 to 2 lemon wedges.
2.Drop the raw shrimp in the water and let them cook for 3 minutes.
3.Reserve about ½ a cup of cooking water and drain the shrimps.
4.Cut the shrimp into chunks and transfer them into a large mixing bowl.
5.Add red onions, cucumber, tomatoes, celery, jalapenos, cilantro, Worcestershire sauce, V8, ketchup, lime juice, and hot sauce. Stir well.
6.Gradually add the reserved shrimp water to adjust the consistency of the cocktail and allow it to cool in the refrigerator for an hour.
7.When serving, add salt and pepper to taste, as well as chunks of avocado.
8.Serving with the tortilla chips.