i was told by a fren who has regular sex with his older bro.....he started this a few years ago when his bro first came home from camp with a str pxxno film n both watched together. As my fren got horny, he asked his bro if he could touch his dick n they then jo for each other. In subsequent session, his bro asked my fren if he could enter him n my fren experienced that for the first time. They continue this till now on and off even though his bro is married now. When he shared his experiences n session with his bro with me, it is really thrilling n exciting.....hehehe.....