Who needs a twitter account when you can send off a fax of your bare backside?
That's the message from US actor Matt Damon, who appears to have had the last word in an online war with Ben Affleck and Jimmy Kimmel.
It all started when Affleck and the Bourne Identity star actioned off a double date for their Eastern Congo Initiative and Water.Org in a hilarious video making fun of each other.
When late night talk show host Jimmy Kimmel voiced his support for the charity contest via Twitter, the Argo director thanked him but also made fun of long-time friend Damon, who doesn't have a Twitter account.
"And @easterncongo & @water thank you! Matt, on the other hand? Matt, you there? Right. We will fax you," Affleck tweeted.
Kimmel, who has a long-running joke about Damon on his ABC show, responded with "Matt is probably too scared to get on Twitter because no one likes him."
Not to be outdone, 43-year-old Damon sent the two jokesters a faxed shot of his bare butt.
The accompanying note read: "Dear Ben & Jimmy, here's my fax. Love, MD. Faxtag: KimmelHasManBoobs."
It seems Matt Damon has just won the internet with a fax.