im 17 years old and never masterbated my entire life well tried to, ive kinda been embarrsed by this as i think its a pretty normal thing to do the problem is i had the snip when i was born and i heard once or twice that you cant masterbate if you had this done not sure if that true or not, anyway my girlfriend and i are into trying new things and she always thought it would be fun to try joint masterbation you know watching each other ive had blow jobs before and sex and i cum then but cant when masterbating im to embaressed to tell her any ideas.?