Yeah, I got called out on the hill last night for grabbin my skis on the lift. They were snowboarders, so they were clearly just mad that they suck at riding lifts, but I just laughed. You could really take four courses of action.
1.) Awkwardly don't say anything.
2.) Laugh about it.
3.) Come at them and make them feel bad about themselves and punch them in the face (with your words or with your fist).
4.) Or you could say that their mom wears saga and skis armada... but then they'll make fun of you more.