A designer has spotted a nerdy joke hidden in Twitter's UI, and the internet is loving it. Click on the the 'Show more replies' CTA below a Tweet, what do you get? Text saying 'More replies'. It's right up there with 'I'm hungry / Hi hungry, I'm Dad' as groan-worthy parent gags go, and surely the proudest part of one Twitter team member's design portfolio.
(Sometimes, of course, you'll actually see more replies to the tweet. It looks like this response is saved for cases where the repliers' accounts have been locked, making their comments unavailable to outsiders.)