Short of surgery you can't
Apart from some sort of major surgery to remove strips of body fat, you cannot lose 50 pounds in one week
By cutting his leg off. 10 pounds in a week is an entirely unrealistic goal and nothing short of surgery will let you reach that. 2-3 pounds/week is a more realistic and doable goal.
In order to lose twenty pounds in one week you would need to burn 3,500 calories each day. This is nearly impossible, unless you have surgery.
You can not lose 30 pounds in a week.
You cannot lose 200 pounds in one week.
No, you could not lose 67 pounds in week on a trampoline.
With exercise, moderate eating, and a healthy diet, you can begin to lose weight in just a week or two, and continue to lose a few pounds a month without resorting to starvation, drugs, or surgery.
It is not possible to lose 30 pounds of body fat per week.
You cannot lose 30 pounds of body fat in one week.
Short of drastic surgery - you can't. For a sustainable loss you're looking at maybe 2-3 pounds/week.
liposuction is the only possible way as i see it.