Begin Edit:

Original subject: "Have I got a Moz virus?"
I'll leave my original idiocy in tact. My daughter just gave me a piece of candy - that's she'd covered in toothpaste (it was a small white mint, so it wasn't obvious). Didn't know until then it was April 1 (have been working entirely too much lately). That said, Good One.

End Edit

When I looked at the subject of my post it said:

"So the "Anti-Christ" is a horrorshow guy?"

I click "Reply" and the subject below says (properly):

"So the "Anti-Christ" is a good guy?"

Also, here's what I see in the text of the original message:

"I must sobirat up to speed on my medieval superstitions."

What I wrote was:

"I must get up to speed on my medieval superstitions."

Any clues?

Edit: Just refreshed and my subject now says:

"So the "Anti-Christ" is a dobby guy?"