Wave function related? I see Psi.
But I find it much harder to write cursive on a blackboard, because it has to be huge so people can read it and because chalk makes such a thick line. And mine gets all slanted too when there's no lines on paper, but I have some stuff on the whiteboard in my room and that's straight. So it only happens on paper for me too. That might only be with math though, straight text would probably slant still.
You know you a lot of math (or maybe are a huge frat bro) when you write greek letters better than your own language...