Happy Birthday To Me!
Peter and Laura and Jon gave me this hat at my 50th birthday dinner, organized by Luisa and attended by almost everybody I actually care about right now. But we’ll see. =;]
I said no presents, and since they actually expended colour printer resources on this, it does count as a present, but it’s so cool I’m not going to penalize them.

Peter had to point out what I didn’t notice, that it’s recursive.