I have 2 1/2 weights.. heh slaynish, thats funny, i hope you were kidding lol, in 6th, my FRIENDS could do about 140, i about 90... and thats pushing it, puberty/testostorone make you alot stronger, i wouldnt be suprised if i could do 150 lbs right now, and i barely work out my upper body.. for example.

In 6th i could probably do 2 pull ups, 5 or 6 real push ups, but a decent 50+ sit ups in a minute... now i can do 15 pull ups, 30 something push ups and about the same amount of sit ups..

Just wait for it, and you will probably be pretty strong, and you will get tall, and all the fat will kinda even out, if you dont eat too much and keep exercising.