Well, I do have my own issues. For example all my writing looks like a dying chicken scratched it out while having a seizure. My M's look like the symbol Zorro leaves on the wall, but after he's had a few too many to drink.
I had a prof once who would frequently admit many of his greek letters were illegible - impossible to tell one from the other. "That's OK," he'd say, "You'll know what I mean from the context."