I do every now and then... and around 90% of the people I ski with do all the time.
but the reason im posting is because this reminded me of a convo I had a couple days ago. So two friends of mine are going up the lift and one of them is really hungover, she says to the guy something along the lines of I feel horrible I wish I could throw up to just settle my stomache a little bit. To that his responce is, I bet I can make myself throw up before you can, and he then throws up off the lift and the wind catches it covering her snowboard in vomit.
I kinda laughed when I read the thread name and got reminded... and after hearing about that, id much rather get spat on from the lift then get dumped on by vomit.