Combine oyster sauce, soy sauce and sugar. Preheat wok or skillet over high heat; add the cooking oil. Stir-fry green onions and garlic in hot oil for 1 minutes; remove green onion. Add more oil if necessary. Add half of the pork; stir-fry 2-3 minutes. Remove pork. Stir-fry remaining pork, return all pork to wok or skillet. Add cooked noodles, onions and oyster sauce mixture. Toss lightly 3-4 minutes or until noodles are heated through.

Serves 4-6.