The Happiest Place on Earth
Some photobomb stories are actually pretty sweet, but this one sounds like it belongs on one of those ghost photography TV shows. Retaking big group photos is a super normal thing to do; after all, you’ve got to make sure everybody’s smiling at the camera and looking sharp.

But although you expect to accidentally capture the occasional bystander, no one ever really expects some mysterious man to insert himself into your group shot and then disappear. How did he end up in that picture without anybody noticing? As far as we know, the original poster never discovered the answers to those questions.