I had Zach tied to the bed and worked the head of his hard cock by hand and mouth. I licked, sucked, nibbled and stroked the very sensitive head, very slowly, as he heaved, trembled, shuddered, panted, twitched, gasped and moaned. But I told him he would be tickled if he shot his load without my permission. Poor Zach was so close, watch him struggle to resist the relentless pleasure I was inflicting on him. I finally took pity and sucked him to an intense orgasm that left him spent and satisfied.