The first ingredient is obviously shrimp. I usually use two pounds of raw shrimp. Make sure that you remove all of the stuff that you would normally not eat, like tails and rise other things that hang off of them.
Next you need to squeeze enough limes to make around 3/4 cup of juice. Makes sure that you have no open wounds or this will be a tortuous process. I have found out the hard way, it's pretty painful.
Pour that juice over the shrimp in a medium to large bowl and let that sit aside for about five minutes until it gets a little opaque.
Once that is done mix it all together and put in the refrigerator for about an hour. The lime juice will actually "cook" the shrimp. I know that sounds kind of strange but it works.
While you are waiting you can chop up an avocado which will be added right before you serve this dish. Do not mix it in as the person eating this dish will take care if that.
The final two ingredients are simply for taste so you can put in as much or as kittle as you would like. I usually put in a few splashes of Worcestershire Sauce, and around a tablespoon of ketchup.
For sake of pictures I served this dish up in a wine glass, I know that doesn't make much sense, but I was looking for Martini glasses which would have been much cooler. Everything is cooler in a martini glass, think James Bond. Now that the dish is done hand it over to your wife and watch her go crazy. You my friend should be in for an enjoyable evening.