You can feel the urge between your legs and lower belly. Looking at his manhood he's earned that title, as he's very much a man now. While you've only been eighteen for a few months, you both have blossomed into very mature looking adults.
You take this time to inspect your brother. His baby face gives him a youthful appearance that would strike you as not having as a big as a member as he does. You've grown interested in observing your brother's physical appearance.
~Strip down the rest of the way~
He begins taking off his shirt and you get a whiff of his B.O. and you can't help but wistfully sigh. It smells better than the best cologne money could buy. He bends down to take off his socks and you watch as his fluffy hair bounces and shimmers the same sandy blonde that has landed on your head. He stands with a blank look completely naked.
The twinge in your crotch is crawling up to your lower and mid stomach, emitting a warm glow throughout the rest of your body. You can't help but feel your breast begin to heavy as your breath starts to slow down with the rest of your senses.
God, he's a man. You exclaim. He's accumulated hair all over his body, and for some reason that's the sexiest thing you can fathom. You've never looked at your brother this closely. You notice the scars and freckles he's obtained throughout the course of life. A sudden urge causes you to start kissing your brother all over his sweaty body. As he's standing their solidly it's not as satisfying as you want.
How should I fix this?