Well to me it’s hard to imagine any kind of humor or fun in a real thesis statement written by serious student or professional writer. Can you?
My opinion is that a thesis, or lets say an application essay, should not be a paper showing how smart and witty you are. There are other forms of creative that may serve on that purpose – a personal website or blog, your social network profiles, your facebooks and twitters.
A good thesis or college admission paper revels to your position, opinion, passion, strong skills and ability to bring value. Not to the fun sides of your mood!