A yeti is a skiier who is trying to act cool on the slope. but really they don't what the hell their doing. Usually, have old ski wear or wearing jeans, they also have hats falling off their heads and really old ski equipment. These are the kids that are going straight down the hill at top speeds. They are also a huge fail!!!
guy #1: "Did you see that guy going straight down the hill?"
guy #2: "Was he wearing jeans and sunglasses?"