Yo, dawg, Justin Case you may be confused with Belly Button, I will cover both topics in this answer.
4. Shirt Button
When wearing a Polo Shirt, you should never, ever, ever, EVER, button any of the buttons. This can be extremely dangerous to you and your surroundings. The Association of Special Buttons, Especially Some That Open Shirts (AKA ASBESTOS), strictly warns against this dangerous risk factor. Maslow himself has stated that this is in fact the most basic of all Hyoo-mahn needs. See diagram 1.Beaver for more informaiton.