I want to gain some more weight...

Try smoking some weed. For sure you'll be hungry and eat more. Haha.

Increasing starchy, sugary, and greasy foods is not a good idea. These are bad for your body. Even if you want to gain weight, your calories should come from foods that are good for you. Healthy fats include omega 3 oils like fish oils, flax, and nuts. Good sources of protein include organic meats, fish, and organic poultry. Increase the number of meals per day to 5 or 6 small balanced meals. Protein powders and shakes can be added as meals. Some are flavored and only need added water and some others can blended with water or your choice of juices to improve the taste. It would be a plus to add a small amount of flax seed oil and some psillium powder to add some healthy fiber. here's the link for a detailed one for you... check it if you have some time http://nutrition.about.com/od/dietsformedicaldisorders/f/GainWeight.htm

if you have time, you should go to a gym. spend atleast an hour or two there. you can have a "gain weight" program. you don't have to limit what you wanna eat. you can eat anything you wanna eat. it's good when you go to the gym. you get toned and you get healthier.