Weightgain 4000. BEEFCAKE!

As far as protein shakes, etc. to gain. You can easily go to a Smoothie King and get a Large Hulk/Gladiator. You'll gain weight.

Also, being extremely underweight might not be worse than being overweight, it's certainly not a good thing.

Girls like skinny dudes xD

They really don't, my mate who is in a similar situation is trying to gain weight because a girl dump him. her reason "I cant go out with a guy who is thinner than me"

OT listen kid, enjoy it while you can, i was quite slim up untill i turned 18 and then holy shit i dont know what happend, its like everything i ate caught up with me you've no need to worry a your age being slim at 15 is normal.

Do you practice any sport?
I remember from another thread that you were 15 or something like that so I dont think you should get upset, time will come when your body starts getting muscule, just do some excersice, not just weights or if you do them dont do heavy things and try not to get fat in the bad sense.

Eat chicken and meat too.

Kids at 15 that did rugby in my school gained a lot of weight, but I dont think you can play rugby if you live in USA, but any sport will make you stronger and healthy(what really matters).

It's called being 15, you'll grow out of it.

so its normal hum i didnt know that. so its normal to weigh less than some girls in ur same age as well interesting. im not talking about fat ones. its not normal thats why im underweight by a lot.

Again, you're 15. You're body is going through changes, your growing, and everyone is different. You're eating so you can't be that unhealthy so don't worry too much about it. Again, you'll grow out of it.

Yeah.  It's really just awesome.  Nothing to be ashamed of at all!

*goes back to eating cookies*

I was considered under weight most of my teen years and early 20's. It is no big deal at all. At 28 I am still skinny but I have filled out.