I haven't seen it myself, but back in 1996--when I first started using the Internet and as a result, typed "tickling" into Yahoo and was delighted to see tickling websites come up--I was reading through the mainstream tickling section at the old Tickle Central webpage. It told about an old movie in which a group of neighborhood bullies were antagonizing some butler. Somehow, the butler ended up falling and getting stuck, and the bullies started tickling his feet with a featherduster. A women that lived in the house eventually came and shooed the bullies away; but, unable to resist temptation, tickled the butler herself before freeing him.
I can't remember the name of the movie, but I think it was some old movie. Maybe someone else remembers? Also, I can't remember if that is exactly how the scenerio went, but it did involve the bullies tickling his feet with a featherduster, and the woman saving him, then tickling him herself.
Personally, and this is just my viewpoint on the matter, I can't really imagine bullies using tickling. As for myself, if I am going to tickle someone, I have to like that person. So, unless bullies just think differently than I do--which is likely, seeing as how I am not a bully--or they are bullying someone because they secretly like that person, I can't see it happening. Not saying it doesn't happen, I just can't see it. Besides, tickling seems like something that would appear to be too gentle of a technique for them to like using. Then again, I could be wrong. I have been in the past. heh