'Hello literally everyone' was the tongue-in-cheek message from Twitter tonight as it took a lighthearted approach to its rival Facebook suffering a worldwide outage.
Facebook, along with its sister site Instagram and messaging service WhatsApp are currently down for users across the world.
And in a Tweet which has been liked more than one-million times and retweeted hundreds of thousands of times, the site's official page said: 'Hello literally everyone'.
Twitter users meanwhile flocked to the social media network to share memes about Facebook being down.
One shared a picture of Pixar superhero Mr Incredible saying 'It's showtime' with the caption: 'When most social media apps are down, Twitter be like...'
Another, carrying on the theme, used a clip of comedy character Mr Bean alongside another character wrapped head-to-toe in bandages, with the caption: 'Facebook, WhatsApp and Instagram down all over the world.'
Others joked about Facebook founder Mark Zuckerberg being sent in to fix the problem.
One user took a picture of an electrician fixing wiring and superimposed the tech billionaire's face on to the head.
Others joked that Facebook and Instagram being down would leave social media managers scrabbling for memes.
One wrote: 'Social media managers trying to come up with a relevant meme that's also funny for Facebook/Instagram/WhatsApp down situation quickly.'
According to DownDetector, the issues started at around 16:44 BST (11:44 ET), with tens of thousands of users reporting problems connecting.
NetBlocks, which tracks internet outages and their impact, estimate the outage has already cost the global economy $160m (£117 million), and sent the Facebook share price down by more than five per cent.
The exact cause of the outage is still unclear, but Dane Knecht, Senior VP of web security firm Cloudflare, says the Facebook Border Gateway Protocol (BGP) routes, used by networks to deliver internet traffic, have been 'withdrawn from the internet.'
Cybersecurty
