As a lover of both tickling and all things horror, it would be a complete dream come true for those two worlds to collide somehow but it just doesn't go well together. I've tried putting myself there mentally but if I'm being tickled, I'm into it. Invested. Enjoying it. I don't think I'd be as perceptive and open to the spooky things around me.
Adversely, if I was already submersed in the spooky world, I don't think my body would immediate register the fact that I was being tickled and would instead try to fight them off harshly.