To a frying pan, fry the Bacon (1 cup) until it is nice and crisp.
Mix together the Mayonnaise (2/3 cup), and Sour Cream (1/3 cup) until combined. Season with Salt and Pepper (to taste).
In a large mixing bowl, toss together the Pasta (400 gram), Carrot (2), Sweet Corn (2 can), Scallion (4) and the fried bacon.
Toss with the mayonnaise dressing and serve.