There is only one rubber duck, and it teleports itself unseen from one bathtub to the next. Anywhere more than one rubber duck is seen at once, mirrors have been employed.
There is no way I'd forget to put my shirt in the car to change into when I get to work, so I wouldn't spend the rest of the day in a running vest. My work colleagues wouldn't take the piss either.
BBC Radio 3 can be picked up in Slovenia by filling a large pair of women's tights with the third/fourth page of the Primorske Novice (only this newspaper will do), and rotating it around an oak staff at four revolutions per minute.