Remember earlier this year, when John Boyega and Mark Hamill were gleefully trolling Star Wars fans by tweeting jokey "spoilers" at each other?
Well, they're at it again.
It started last Friday, when Boyega tweeted about the start of the publicity run for The Last Jedi.
Never one to miss an opportunity for some light trolling (or some serious dad puns), Hamill responded. Read more...More about Twitter, Uk, Star Wars, Mark Hamill, and John Boyega