I like to look under my classmates' skirts.
Why would you do that? You must be joking.
It gives me a lot of satisfaction.
That is a huge invasion of privacy. You should have more respect for your classmates and not look at them like they are objects for your satisfaction.
Whatever, so I'm a creeper. Women like it.
Women do not like you doing that without consent. You should stop that behavior immediately. Being a creep is not something you should be proud of.