I love everything about it. The mild scent of a man's sexual pheromone, the texture of his balls against my tongue, and the slightly salty taste of the head of his cock. I love feeling my lips spread wide in submission to him when he enters me, and the sensation of his penis moving inside my mouth when he thrusts. The taste of precum is insanely good because I know I'm pleasuring him right when I taste it. And of course, there's his orgasm... I love hearing him moan with pleasure, feeling his body quiver, and his shaft pulse between my lips. I almost cum myself when I feel jets of semen shoot against the back of my mouth, flooding me with salty flavor. Unless it's really salty or pungent, I swallow it all, which is a very intimate thing to do. When he finishes, I love gently sucking him until he's fully soft again.