Trying to gain wait and be fat is utterly stupid. Think about it for a second. You'll be clogging your arteries and you'll die of a heart attack. 
The smart way to gain weight would be to eat properly and work out, and get a lot of rest as well. Sign up to a gym and go every day or two, or at least weekly and get a good workout. Try to build muscle mass by pushing yourself to the extreme.
Get in shape, not out of shape.
Cretin
PS: Just because you're not fat, doesn't mean you're in shape. I am skinny, and I am not in good shape at all.
The smart way to gain weight would be to eat properly and work out, and get a lot of rest as well. Sign up to a gym and go every day or two, or at least weekly and get a good workout. Try to build muscle mass by pushing yourself to the extreme.
Get in shape, not out of shape.
Cretin
PS: Just because you're not fat, doesn't mean you're in shape. I am skinny, and I am not in good shape at all.