Almost 50 years ago I was shown a photo of an unusual cloud formation. It looked uncannily like the 'classical' representations of Jesus' image with which we are all familiar. The owner of the photo claimed this miraculous appearance of Jesus' image in the clouds was proof of His imminent second advent.
Of course, I knew then this was complete nonsense, but I kept my own counsel. I didn't want to hurt this old man's feelings, so I feigned mild amazement at this wonderful 'sign'. This brother must be with his Lord by now, and hopefully he now knows what he didn't know when he showed me that photo.
Pieces of burnt toast or cloud formations that look like Jesus are not signs of His coming, but the febrile atmosphere created by sensationalised apocalyptic expectations (eg Left Behind) misleads many into seeing exactly these kind of 'signs' in the ordinary and mundane.
Unless, of course, you are one of those who believes that 'imminent' can mean more than 50 years away.