Stands for "stir the fry up." It expresses a desire for the recipient of the command to get started making a delicious stir-fry dinner. Similarly, GTFO ("get the forks out") informs them that pronged metal utensils should be retrieved and the stir-fry eaten with them. WTF, or "where's the food?", is another way of saying that the stir-fry is simply not being made quickly enough.