I don't think I've ever gotten that feeling! I'm not saying I don't fall off! I just never have a feeling about it before hand. I have started working with a horse and thought, "ooh, this is going to be an interesting ride. I wonder what will happen...." But yeah, can't say I have! Maybe I'm stuck with the boring old 5 senses. :)
A trainer once told me "what you're afraid of will usually happen when you're riding". And I found it to be pretty true.