why does donald duck wear a towel when he gets out of the shower?

hmmm its a mystery that may never be solved however my view is quite simple. actually 2 views so maybe not simple.. first .. it teaches children that after a shower or bath they must dry themselves properly and cover themselves up for a sense of decency. second .. maybe when his plumage is dry it covers parts of him we do not wish to see and when wet those parts are visible .. like your hair when dry covers your scalp but when wet you can see your scalp .. so maybe the towel is for modesty:)