It might be a guy thing wiping sweat from the eyes with the back of the hand/wrist. I see people do it all the time. Capsaicin in the eyes is not much fun so since people can't put their elbows in their eyes I tell them not to put it below the elbows. Then if they do and stick it in the eyes they are on their own. In today's litigous society you have to cover all bases.