Climber's hands, Yosemite Valley
My husband's hands, actually. He was bouldering, working on a problem and I noticed how exquisitely filthy they were (his hands, that is)... like only a climber's hands can be... chalk and rock grime all ground up into the skin. "Hold out your hands for me, would you?" Click. That was the only chance I got. He was back on the rock in a heartbeat.