The world of Super Mario just got a little naughtier by freak accident.

Some folks who purchased Boss Fight Books: Super Mario Bros. 3 have discovered a pretty amazing mishap. Apparently, the non-licensed autobiographical book shared the same number of pages and other printing specifications with a raunchier satire title.

As a result, some copies of the book contain the entire contents of ‘Grabbing Pussy’ by Karen Finley.

You can check out the huge mix-up below.

https://twitter.com/brandokay/status/1059487738901262336

It appears that only copies ordered from Amazon have this issue, so at least affected customers can contact the online retailer for replacements. We can’t imagine why anyone would want to give up such an interesting misprint, however.