, i am 21 years old ,,last times when i masturbate i note that my penis head have realy deep lines on it,, my penis head is very wrinkled,,i have looked the pornstars penis they are realy smooth ,why my penis its like this??is this hepening jsut because i masturbate a lot?? i realy care about it ,i wash it everyday ,,this lines go a way when i am arect,just 3 big one that it not desepire ,my english its bad i am sorry,, can anyone hel me pls?? i am thinking that my penis was like this whole my life but i never note,,i am still virgin i never had sex ,,so i dont kow why i have my penis like this!!!