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A guy’s cock that gets hard before he even finishes blinking when another man gets turned on. It’s like the cock has a mind of its own and just wants to show off.
My peter got hard before he even saw the guy. Like it was a reflex.
He was still buttoning his shirt and my peter was already hard. It’s like it had a separate brain.
At the bar, the moment he looked at the guy, my peter was out. It was embarrassing.