Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain.
Meanwhile, heat vegetable oil in a medium saucepan over medium heat. Add luncheon meat, green onion and garlic and saute until light brown. Stir in cooked spaghetti , then stir in soy sauce, water, sesame oil and pepper. Mix all together, heat through and serve.
