This is the greatest auto-correct prank we've ever seen.
It has long been known by students of irritating people for laughs that it is possible to edit someone's auto-correct smartphone dictionary to humorous effect.
The tactic is simple. Take a simple term, used often, and replace the autocorrect text with something either incredibly offensive, rude or just annoyingly long.
Then sit back and wait for the befuddlement to turn into rage.
Which is exactly what Twitter user MrBikferd did, when he replaced the words "dirty laundry" on his mum's phone with the text of James Joyce's novel 'Ulysses'.
The fallout unfolded thus: