Charlie watched with eyes wide on his screen, fearing being caught if he moved an inch. One hand held the phone and the other was planted firmly over his mouth, but as he watched he slipped his two fingers into his mouth sucking in time with the thrusting equine.<br/><br/>Just after his fourteenth birthday he learned he got hard and even could orgasm just by sucking on something long enough to fill his mouth and with his nether regions suddenly swollen and aching he knew it would be no time before he blew in his gym pants.  It was that fact that kept him going. He could easily change.