He may be anti-wind but at least he recycles his urine to colour his hair.
Its a Scottish thing, men's piss is used to improve the quality of tweed fabric. Donald uses it on his hair.
" Waulking has two important effects. Firstly it cleanses the cloth and eliminates excess lanolin, oils, dirt, and other impurities. And secondly, it makes the material softer and thicker.
Originally this was done by literally ‘walking’ (i.e. treading) the fabric in water, perhaps treated with a proportion of urine for its ammonia as a cleansing agent."
I bet your pervert black -or should I say brown?- friend is into it.