Get a pan on medium-low heat, add enough oil to coat bottom of pan.
If you want your hot dogs to poke out each end, then slice two of the edge off each tortilla (refer to picture).
Place some red onion near bottom of tortilla, then sprinkle cheese on tortilla, and top with hot dog.
Roll tightly around hot dog.
Place in pan with the end of the tortilla on the bottom, which allows it to fry and stay closed.
Rotate as each side becomes golden brown, cooking until the whole tortilla is golden brown.
Remove to paper towel and sprinkle with salt.
Serve with your favourite dipping sauces.