A Banana Jacket is a piece of clothing that is made and manufactured by lunatics, for the consumption of crazy people, known for causing its wearer to behave absurdly, erratically, and eventually to go completely bonkers. It is generally sold to and purchased by the same sort of person who would take a pet monkey with them on a leash at all times, or who perhaps might drink ocean water out of a coffee mug with a bendy straw. Eccentric millionaires have also been known to take special interest in obtaining and wearing the now rare and collectible banana jacket.