Two identical twins, lean and lanky, their bodies mirror images of each other, find themselves alone and horny. They've shared everything, but never this. One, more adventurous, straddles the other, their cocks rubbing together, already hard. They grind, their breaths ragged, before the adventurous twin lubes up and slides down onto his brother's cock, crying out at the intense sensation. They fuck, their bodies moving in sync, their moans echoing each other. The adventurous twin comes first, his brother following soon after, filling him with hot cum.