Are there examples of the Buddha showing humour in the Pali Canon?

Leading on from this question - are there any examples of the Buddha showing a sense of humour or a certain lightness in his teachings within the Pali Canon? I was once told that it is possible to find examples where he perhaps approaches teaching with a gentler approach depending on his audience. Certainly the Buddha gives the lions roar but does he sometimes give the cheeky wink too?