Just the Tip - Teaser

My sex slave, in bondage, only gets to penetrate me two ways, with me sticking just the tip inside, or all the way in me but for only about 10 seconds at a time. He has been tied up and previously locked in chastity and desperate to cum, but no matter how much pleasure I get from fucking him and threatening to lock him back up, or to ruin his orgasm, I will never let him cum. I lick and ride him in various positions, but only for a few seconds at a time before jumping off and laughing at him... the only thing better than sex is having it while frustrating a man (full version available).