i used to masturbate with my neighbors (boy and girl) from 8 to 12 years old but after i stoped even though my boy neighbor used to ask me for it several times after that age. Probably because i became more selective, he was OK looking, even a bit handsome, but didn't click me as a sexual partner. To me it has to be (now and then) more that a beautiful cock even big cock. The rest of the body attached at that cock has to say something to me, but specially what it is inside the head. Has to be like an electrical atraction, in that case i don't really mind about big size or normal size, i had to be a bit comprehensive in case of a small size and i am sure i would.