...that's what happened to a riding buddy's leg from knee to ankle after being hit by a drunk driver. If you don't know what 'degloved' is, it's a medical term for when the flesh is peeled back from the muscle like a glove being removed.
Buddy was only wearing shorts while riding. My friend was the RN working on him in the ER and she says that if he had been wearing at least jeans and proper riding boots, his leg would have been fine. Now he's looking at losing most of the flesh on his lower leg.
Think of this little tale the next time you decide to ride in your shorts.