In a large skillet, heat over medium heat, then add ground beef. Cook for 7-10 minutes until browned and no longer pink. Drain excess fat, season with salt and pepper, and set aside.

In a medium bowl, combine mayonnaise, ketchup, mustard, and sweet pickle relish. Mix until smooth and well combined.

Lay a large flour tortilla flat. Spread a tablespoon of the special sauce, then layer on the ground beef, lettuce, cheddar cheese, onions, and pickles.

Fold in the sides of the tortilla, then roll it tightly from the bottom to the top to secure it. Optionally wrap in parchment or foil.

Slice each wrap in half at a slight diagonal with a sharp knife and serve with your favorite sides.