(from this website: http://www.zazzle.co.uk/give_me_cardboard_gerbil_version_t_shirt-235396533854869289)
Patent awarded: 1999
Patent says: "A pet display vest for a person, having an elongated, enclosed, pet receiving, passageway extending thereacross with at least one closable pet admitting entry, at least part of the passageway being transparent so that, when the vest is worn, a pet moving along the passageway across a wearer's body can be viewed by a spectator."
We say: A great invention if you ever thought, "Gee, I'd really like to take my small rodent out for a walk and get it some sun." Just try not to trip.