We've all sent texts and emails that we almost instantly regret, but if you hit send on a poorly-thought-out Twitter direct message, you may be able to delete it before it's too late.
This feature is actually built right into Twitter, and we never realised it existed. Unlike Gmail's Undo Send feature, which only gives you a few seconds to rethink your decision, Twitter DMs can be recalled at any time. On Twitter's web site, you can click the trash can icon on a DM to delete it from the recipient's inbox. Most Twitter apps have this feature built in too. Of course, if the recipient chooses to receive DMs as push notifications or emails, you'll probably be out of luck. But on the off-chance that they don't, it's certainly worth a try.