Inspired by
this SW series of pictures. Check it out if you haven't already.
I do not know about anybody else, but I find processes more enjoyable when the victim is enjoying her changes. So when I stumbled across the link above I had to think "why isn't tickling used as a process trigger more often?" The girl is happy and laughing, which makes me feel happier.
Unfortunately, I was only able to find one other picture in my quick search last night.
Tickle BE by the Process's own Test-0