Reminds my of those 'swing bikes' that became a very minor fad in the 70's... they were crap then, and still crap now.
Not crap, just fun! Sometimes a bike doesn't have to be serious. People love mucking about on stuff like wobblebikes, microbikes etc, just playing.
When we did try-out shows, promoting cycling, we had a number of 'clowning' type bikes among the serious commuters and folders and so on. People loved having a go. But whenever we did a show at a Uni, there would be some academic who came out and look at a microbike or an eccentric wheeled bike and say "So what's the reasoning behind this one?" and look bemused when we said "Fun!"
For the ultimate in pointless giggles, check out WobblyJohn's website:
http://xntrick.co.uk/