It's a shame because this has happened to you on more than one occasion. Whether you're looking to see if the store is clear so you can lock up, you'll spot a head and radio for security to wait until you've gotten them out of the store. Except it's a mannequin and you look a bit silly now. You'll probably knock in to one of them, apologise profusely and become offended when they don't say anything back or acknowledge you; again, it's a mannequin and you're hoping that no one has heard or seen you do it.