Well, i'm uncut and I can cum pretty normal... Maybe you should go see your doctor, or ask your dad about it. Or ask a doctor on-line. Or just wait here, see if anyone knows...

I'm a high school student, and we are now doing weight training in physical education. We are using really heavy weights and compound exercises, i'm just wondering if that will stunted my height or not... And if it does, what should/can I do?

There is this "jeque" or something, it's everywhere on the net, free. Basically it's do the "milking" motion to the penis, but it takes time and effort...The requirement to gain size is 500 times every day... But it seems to work on me. My penis was 17 cm, after 1 month of exercise it's now 19 cm. Why not give it a try, maybe it'll work:)