Happy birthday Christian!
After everyone devoured cake and ice cream and Christian opened up his gifts (and counted his loot) Ken and I went and picked up theboneshaker / penny-farthing. Mike and I had tried, unsuccessfully, to ride it a few weeks before but Ken was sure he could do it on the first try. And ride it he did... he had no problem riding it right from the start. Here's a quick video of him sprinting down Mike's street.
Even I was able to finally ride the bike.