Okay, so this pun is appalling, not really that funny the first time round, and even less funny the second way round. As mentioned in previous posts, however, I do not know the person I designed this cake for, and therefore her sense of humour, so I decided to play it safe with the knowledge that she's a primary school teacher and guess at poor and tame and sheep-inclusive.
I heard she ended up sharing this with her infant-school class and it went down a hit. Not even undercooked-chocolatecakezilla with nutella buttercream swirls has yet to fail me. (The sheep, however, did not make anyone laugh...and I don't think this was because they were a tough crowd...they were five, afterall,)