<s>[INST] my problem is my penis.. its small size 4.5inch full erection, curved shape , tight foreskin i tried so much too push back but fail and sleepfall. i think my body has not been growing since i started menstrubation at the age of 14. and i have only 28 teeths in my mouth [/INST] Degree understand your concerns went through your details. Penis size of 4.5 inches is more than enough to satisfy any girl across the globe and to have sexual satisfaction. The curved shape is good because it will give you more pleasure than a straight penis because of the extra friction it makes within vagina. You have to use some lubricants or soap liquid to practice movement of the foreskin for some days, or you should circumcise your penis foreskin.  Masturbation is a healthy practice and can't slow down your growth or cause problems to your health if practiced moderately. 28 teeth also is normal. Now stop worrying and get to business and your career. Unnecessary thoughts could trigger anxiety. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. Hope this answers your query. Available for further clarifications. Good luck. Take care. </s>