If taping an old photo of Anna Nicole Smith or Al Roker on your fridge hasn't helped you lose weight, you may want to consider using mypetfat, a yucky yellow glob of fake body fat designed to remind dieters to lay off junk food. Created by lifestyle writer Jay Jacobs, who claims the bogus blubber helped him shed 115 lbs., the diet aid comes in 1-oz., 1-lb. and 5-lb. versions (prices range from $15 to $100). Recommended for use in grocery carts in tandem with a real nutrition-and-exercise program. Just don't try to eat it.