I've seen a mousse can (lid still in place) and a fluted vase suitable for a single rose (open end first) inserted in rectums on radiographs. The patient generally comes to the ER a few days after the event due to illness or fear over riding the shame of the event. It's kind of sad, actually. BTW using a bent coat hanger to retrieve an object can perforate the bowel and require surgery
Hanlon's Razor: "Never attribute to malice that which can be adequately explained by stupidity."