Fast, cheap, good. And unlike anything else you don't have to pick two.
Ingredients:
1 6oz can tuna (drained). White Albacore is preferred, but the less expensive cut will do.
1 16oz package salad macaroni.
½ cup mayonaise
2 tsp lemon pepper (Lawreys is preferred).
juice of ½ lemon (optional but recommended)
Boil the macaroni in salted water until tender, drain. Mix in remaining ingredients. Hot or cold, serves 6