It just happened to me on SU that the captcha was not shown. Neither in Safari nor in Firefox was there any way to show it. There was just that robot guy with the numbers on it. Of course I was thinking this was the captcha – and I desperately searched for a text field where I would have to put all those zeros and ones. (Not that it really thought that that many numbers would really be the captcha – but lacking anything else on the page, what else should it have been?)
Cube of cold pinkness / Yellow specks of porcine fat / Give me a spork please
How is this not confusing?