>>99548267Easy, you've just responded to another post, and decide to respond to another, either in the same thread or a new one. Either you solve the captcha before typing out your quick response or it's happening recently where there's a captcha cooldown and you don't even have to fill it out. You click autopost once your timer is up, since you assume you can type your response fast enough.
Then you have a stroke or die at the keyboard or just fuck up really bad and don't have time to fix it.