I don't think this is common at all, but I know someone who is overly fond of the made-up word "fastivious". She was describing someone as such and I was loath to correct her, so I did what I thought was the polite way to bring it up and used it in another sentence later, as "fastidious". (It's rather hard to just drop fastidious into a conversation and make it look innocent, I can tell you!). I had to bite my tongue when I was immediately corrected in a very smug manner... grr.
I must agree with those who hate the use of "I axed her" - sounds rather homicidal. Don't get me started on their/they're/there and abused apostrophes. I frequent various boards on the net, one of which is geared towards people a little younger than I am, and every so often I have to just leave it for a while as the language butchery gets too painful to read. I think the latest reason for my running away screaming was the person who was misspelling "his" as "he's". Egads.