The word skinner is derived from the english word skin. This is because a skinner usually lacks hair in certain places, showing more skin than necessary.
Student 2- God hes such a fucking skinner.
Student 3- Wow, you guys are idiots. Try coming up with something a little more original and maybe people will respect you more.
(student 3 leaves)
Student 2- I can't believe he's taking his side.
Student 1- I kno, what a skinner ~kss~kss~