Seed and chop jalapeños (you can make the pico de gallo hotter by leaving the seeds in one or more peppers).
Mix ingredients together. Add lime juice and salt and pepper to taste.
Chop up avocado and mix in.
Serve!
Notes
You can either add the avocado all at once (which will brown after 1-2 days), or you can chop up the avocados and add them as you eat. We use the first method for parties, and the second for when we make it for ourselves!