I feel like i'm unusually stong.?

ok so i'm 16, i'm 5'5" tall, and weigh like 113 lbs. or something last i checked. i'm really freakin skinny too, i dont really run fast , can jump pretty high, good reflexes, and i feel like i'm unusually strong. all my buddies are like way taller, have way bigger arms, and lift weighs and crap u know. well me i've dont yardwork all my life pretty much. and i seem to be almost as strong or stronger then some of my buddies. my dads worker even keeps calling me hercules and **** lmao. but heres the what i dont get i weigh like 113 and i picked up the front end of a 2,000 pound woodchipper, also had adrenaline running at the time but thats a whole nother story lol. in shop class i even picked up a 4 wheeler and held it above my head. i dont even work out , except for like lifting things like lumber around the property for like carpenter related activities blah blah blah lol. but how can i be one of the smallest guys around and be this strong? yeah i know its weird lol