Dean was happy to sit back on his heels and let Sam look him over all he wanted. The possessive, hungry look in Sam's eyes was just what Dean wanted to see. Then he was given that order and he licked his lips, taking the lube and laying back to get comfortable. He slicked up his fingers and put the lube down nearby, figuring he'd need it again before long. He reached down and pushed a finger inside himself, working it slowly against the tight ring of muscle.