So I have this argument almost every winter because I live in Texas and although I do i still manage to ski 20+ days a year which i know isnt much, but i will take what i can get. The best way to prove this is tell him to find you a snowboarded with as much style as say jossi, or gus kenworthy. Even Adam Delorme, if you look at what he does its insane! They probably all see skiing as a "pussy" sport because they have no idea what park skiing is all about. Just tell me how easy it is to nut yourself on a snowboard? Because you have to fall face first or really fuck up to do that. On skis, one ski slips off and the other goes the otherway and boom good bye to those suckers. If you say you havent nut yourself, either you are lying, or you are just not as i dont know dumb as some would call us. So that is just one part you could argue, and if they say well thats why snowboarding is better than say well you are the pussies than because you are scared to try a rail and nut yourself. Also, it is so easy to ride rails and boxes on a snowboard. Tell any of those girls to go big mountain skiing or even hit a 15 foot jump. They wouldnt have a chance, but unless they ski like kaya turski than okay exception because she is damn good. The only thing we can thank snowboarding for is really opening up the freestyle era, but other than that us skiers have taken it to new extremes. Hope this helps, and from girls i ski with that also ski we had a chairlift talk about most attractive male and female skiers, which i know sounds weird but the girls all agreed on Gus Kenworthy, but i guarantee i wasnt part of that. In all honesty, dont know how that talk started, but just tell him and all his friends that snowboarding is gay, they will never have the style of park skiers, and the tricks they huck don't look anywhere as sick as skiing.