carbs. lots and lots of carbs. its how wrestlers gain weight.
But it also may be your metabolism and there's not much you can do to change that. As you get older it'll get slower and you'll gain more weight.

I've been trying for like 2500 calories a day :C I don't run around or anything so I don't understand why my metabolism would be so high ugh.

calories don't make you gain weight fast. carbs do. when wrestlers want to gain weight in a week they eat carbohydrates. carbs and calories are too different thinks.
your metabolism is high because you were born that way. It's not something you control, some are born with slower (like me) some were born with faster (like you) it has to do with genes.

Don't eat normally.
Up it to 6 meals a day with snacks.
Drink nothing but pop.

Be me. lol

OMG YOU SAID POP
I'm so easily amused lol, but thanks!

Snacking throughout the day actually maintains your weight because it regulates your metabolism and keeps it running. I'd say just stick to the meals of you can, but eat LARGE meals. :B And maybe set them at different times. Surprise your body.

If you can* >.<

Lol, I didn't even notice the typo until you corrected it xD
I usually don't have much to snack on :C

Good. XD Avoid snacking!

FUCKING PROTIEN
http://www.youtube.com/watch?v=Q5QJ9i_o5vo#t=1m40s

LMFAO LOLOLLOOLOKOFDKNGKFDNGHKDFGHFBNFBG HA
I've actually tried protein shakes, they're absolutely disgusting. >:C I can't keep them down man

Meat man :'0 Protein = meat
EAT MEAT LIKE A BEAST

lmfao I need to keep an eye on this. Since you basically described me, 15, 5'1ish , 80 pounds last time i checked which was last month :c and i cant gain any weight i dont even excercise much xDD and im constantly snacking lmfao

I'm a very skinny person as well and have always been that way.
If you can, go to your Doctor and ask for your blood to be taken and have your thyroid checked.

But peanut butter is great and snacking on peanuts, almonds, etc is also good. Peanuts are high in good fat.

Other than that, exercise. Muscle weighs more than fat.

I have the same issue.
21 5'1 89-90 lbs.

Currently at 93lbs. Still trying to gain so I'm at least 100lbs.

Made sure to eat full meals three times a day, served myself what I usually eat plus half.
Lots of water, no coke/soda/root beer.
Eat healthy, eating fatty foods just makes your body burn it off since you either don't eat as you should or have a fast metabolism like I do.
Exercise, I know this seems redundant, but it makes you hungry and helps get your body into using your food properly rather than just burning it off in one day. You're also more likely to keep lean muscles than to keep fat on.

increase your calories per day up a few hundred month by month until you gain the weight you want and then see how that does.

The issue with that is I have a small stomach, eating that much more is really difficult

thats why you have to slowly increase your food intake or eat things with higher calories.

I am back with a newly discovered fact!

How are your sleeping habits?

Honestly, I had pretty bad sleeping habits before this happened to me, but I used to weigh about 115-120. I didn't even eat too much; sometimes just one meal, sometimes two with breakfast being a honeybun or something similar. Rarely snacked.

I have just about the same eating habits, but I snack a little more frequently sometimes. I started a horrible sleeping habit where I sleep every other night. Literally... I cannot sleep every single night now. :/ And when I sleep, it's about 4-12 hours... x_x

I've been noticing it more and more, but my stomach growls much more often, I have a very flat stomach, and my pants are getting spacier (and I already wear 1s and 2s, gah). So I stepped on the scale -- lo and behold, I now weigh 100 lbs.

So, believe it or not, I guess sleeping habits are a huge factor in weight, haha.