In a skillet, cook the ground beef until browned. Add the taco seasoning and cook according to the directions. Typically, add 1/2 - 3/4 cup water and seasoning to the ground beef and cook an additional 5 minutes.
In a bowl add a couple handfuls of nacho cheese Doritos.
On top of the Doritos add taco meat, lettuce, tomatoes, cheese, and sour cream as desired.