Skiing's word?
Seriously man, Gangstarr was putting out "you know my steez" back in the early 90's, and skating has a lot more ties to that culture than skiing.
Skaters have been steezin since before half of this site was even born.
As a skier, it's embarrasing how many young skiers love to steal culture from elsewhere and claim it as their own, it's kind of like the kids who bitch about snowboarders being in the park, without realizing that snowboarders are the reason parks exist.
If the shirt said "I should charge fees to watch my daffy-twister-spreads", then you might have a point.