...not this one, which I've never liked and therefore repudiate out of hand:
He definitely couldn't have meant this one, which is included in the returned images if you Google Images of William Shakespeare and doesn't look a bit like me. In fact, I doubt this is Shakespeare at all, which leads to the not unreasonable suspicion that it might be the Earl of Oxford:
* * *
This morning I had an email from a once-precious person who I thought was lost forever. Tonight I had an uncharacteristically large piece of fruit cake after dinner, and subsequently fell asleep in consequence of an over-taxed digestive system. When I woke up I felt oddly convinced that the email had been the subject of a dream engendered by the fruit cake. Imagine what any of the Shakepeares might have made of that.