Have you ever been telling someone an anecdote and, in the middle of it, begin to actually listen to what you are saying and find it so strange and unbelievable that you start to think you're making it up?
No?
Right then, that would just be me.
I had to think for awhile afterwards to reassure myself that, yes, strange things do happen in real life, and, yes, I had seen this particular strange thing with my very own eyes and hadn't dreamed it or wished it or really even embellished it at all. Which disappointed me, as I was beginning to think that my imagination had gone round a strange and interesting bend.
Ah well.