Well since I inspired the thread, I'll go:

My cock starts soft and flacid. As I become aroused it begins to harden and grow. I love the feeling of a woman sucking on it, bringing it to life. It throbs as it grows. The head becomes fully engourged and redish/purple. The skin stretches as my cock becomes thicker and longer. My balls at the same time become ultra sensitive and enjoyed being sucked on and softly squeezed. Now what I really love is the area just between my balls and ass massaged. When that is being rubbed while I am jerking off or getting sucked, my cock is as thick and hard as anything.
When I am close, my thick shaft twitches and jumps until thick ropes of my hot, sticky cum flow freely spurting from the swollen head.

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One hand always on my rod!