Just out of curiosity did you happen to smoke marijuana before or during puberty? I have read pre-pubesent thc use can cause gyno. I have had the puffy nip thing since I was 12, when I started to smoke(I was a wreckless youth!) My doctor assured me that it is natural, just like inny & outy belly buttons, some guys have different nipples. Be glad yu don't have 3 nipples like Mark Wahlberg!!!!