I must say that buying a dozen ducks for a family in the third world for Christmas for the Deputy VC is a very generous gift. Putting live copies of all twelve of them in his office last night might not have been the best career move ever. I had no idea that duck poo could go that far!
Whilst everyone else thinks that it is funny and has certainly given people something to smile about I have a sneaking suspicion he has had a bit of a sense of humour failure and has asked to see you before you leave today. May I suggest a little humility and an apology.
When the hell did you get them from?