We were alone in the house for the night, it was just getting dark outside when my brother entered the room naked. "Time to pay up bro, remember I get the full works from you." "Ok," I say. "Right here or upstairs in your bedroom?" "Upstairs, of course, I want to be comfortable for the sex. Follow me," he says. So I walk behind him, damn he has the best-looking ass and sweetest smelling. I just wanted to grab his ass and...