Wow. Time to dust off the amateur graphology.
It’s a startling, unconventional abstraction. Very tightly controlled though. This is a person for whom a signature is a statement of disdain to the point of defacing, almost grafitti.
It’s a power play, too. Look what I can do and it won’t hurt me a bit, I’ll make all your serious paperwork look like a clown car ran over it.
He’s a destroyer, he’ll be worse than Geithner. Studied unseriousness but with control and purpose. He’d relish the thought of implementing that loony platinum trillion dollar coin.
Aloof and disengaged from other people, sort of like Obama himself. But there's also a dandy-ish streak or flourish in the signature -- and maybe in the man, though it's not something he lets out.
On the other hand, maybe Tristram Shandy is his favorite book: