Pickles has peed & pooped in my other half's slippers! They like the smell of cheesy old shoes- they go nuts & annoint themselves- basically lick things, foam up & cover their spines in the foam! It's gross, especially when they do it with a chewed up insect, but really cute too cos they usually fall over.
The shoes in the pic were heading for the bin, so of course he didn't want to poop in them lol