This is achieved via frequent masturbation to the point of orgasm. This is still achieved via sexual intercourse.
You cant
surgery
I've heard that strippers regularly use a lead pencil on their nipples to make them stand out more, but I'm not sure how effective this is!
Chloroform is no longer used for Surgery
Have surgery.
sorry there is not any know way to science to do so without surgery
why would you want your nipples bigger anyways?
surgery
yes there is so weather you be male or female chin up! more exwsersize that slowely takes fat out the nipple and reducing nipple size also there are many herbs that can reuct the breast gland and nippels.
A vacuum pump may increase them some if you feel the need.You could also use femenine hygene products (creams and such) with estrogen which would cause you to actually form breasts and maybe increase the size of your nipples - though this is probably very dangerous and would likely increase your risk of contracting certain forms of cancer and who knows else, so ask a doctor.Why you would want to do this is beyond me though, but to each his own.Oh, and there's always cosmetic surgery.
You should study the ancient Chinese, they made there feet smaller without surgery. But it did make the feet look awkward, and was very painful.
massage
You can't without surgery.