Dean would've had guns out for anyone trying to pick up his little brother, definitely wouldn't be a business that'd get off the ground very quickly. Of course, that wasn't what was important at the moment. Sam's hand on his dick was.
Dean grunted a little, shifting his hips, and he frowned at it all, leaning up on his elbows. He wasn't sure if he liked it or not. The whole feeling of being touched was great, regardless of it being his brother, but he was pretty damn sure they were going to need practise for this to be mind-blowing.
Without speaking about it, he reached down and took hold of Sam's hand, guiding it in a few steady, firm strokes along his cock, a rough breath escaping him. Yeah, those callouses made it a Hell of a lot better.