Yes, he was the joke candidate. The American system I suppose, frightening.
I'm not even certain that Clinton will win to stand against him and beat him, her age is against her and, in a funny way, her gender. I'm sure the US would love to have a female president, but may feel that they would be voting for her because of that, rather than policy, and therefore hesitate.
I can also foresee a scenario when Corbyn ends up PM here - looked equally far-fetched a while ago. I may start to gibber more than usual!