The ability to tickle yourself and actually produce laughter is rare, but I did see a demonstration of it at a gathering in Albany by TMF member NJJen. She was not faking, I was right there in the room with her and she could tickle her own feet producing involuntary laughter.
Hypnosis might help, I have seen files where you "feel" feathers or fingers tickle you if you manage to go deep into trance. Im sure it is possible to trigger ticklish reactions to self tickling as well. Perhaps through a possessed hands mechanism.
Yes. I can do it... but the stroking of feathers or fingers turns me on.... So while it makes me jump and squirm... and tickles here and there... I get too turned on for for it to be a complete tickling session. Blindfolding myself seems to help some.
I can do this to a certain extent if I use a hairbrush on my soles. The problem is that I keep pulling away... Now if somebody else were tickling my feet like that, and I COULDN'T pull away... Yikes! I'm sure I'd be in a hysterical mess.