I believe that a lot of girls may not tickle back for a variety of reasons... I'm a male, myself, so maybe some of the female members of the board can validate or deny these assumptions, but this is the best that I can come up with...
1) When most non-TMF people think of people being ticklish, guys are not usually who they think of. (I mean no disrespect to the women, of course). But I think that popular opinion holds that people assume they have a better shot of finding out that a female is ticklish as opposed to a male if they tried a "just-tickle-and-see" test.
2) The other popular notion that also fits into this (and, once again, I mean no disrespect to the women) is that males are generally stronger than females. A non-TMF female would have to think that the male is just going to reverse the tickling on her once she begins.
As stated, I mean no disrespect to women with either of these two statements. I am more ticklish than some females I know and I also know some females who could whip my butt outside the bar😉 Those two statements just bring me to this conclusion...
If you have a female who does not particularly enjoy tickling as much as a member of the TMF might, she probably thinks about those two statements first. She might figure, "Well, even if he is ticklish, he'll just reverse it and tickle me and I am not in the mood to be tickled today."
Then again, that might just be me or my experiences with females... I could be way off.
Having said that....
I find that it is particularly helpful to drop the "hint" that you are ticklish to the females to see how they react. For example, I was talking on AIM to one girl the other night. She's just a friend and there's no chance of either of us ever "Connecting," so I was doing this in the friend-mode. I happened to mention that I was massaging myself with those spike-balls that people massage their feet with, but I was having a difficult time because it was tickling my feet too much. Well...after stating that, the follow-up questions from her were ten-fold. "How ticklish are you? Where are you most ticklish? etc." And then it was followed by exactly what I was looking for, "I'll have to remember that for the next time I see you."
It helps to exaggerate sometimes, too...the more "exciting" you make it for them, I find the more likely they are to explore tickling you. I know that most of my friends would jump at the opportunity to beat a guy in a tickling contest, but, once again, maybe that just applies to my friends.
However...
Once you make those claims of being ticklish, you have to be open to the tickling. For instance, if you tell someone that your feet are your most ticklish spot on your body, you had better be barefoot sometime around that person. I made that mistake once. I've posted it a long time ago, but a friend of mine and I were having a conversation on AIM one night and the subject of tickling came up. We both mentioned how our feet were our most ticklish parts of our body and, the next time we saw each other, we had a massive tickle fight. I never allowed her to get to my feet, though, so it wasn't very fun for her and, as a result, she never tried to tickle me again.
The hardest thing I had to realize was that not everyone enjoyed tickling as much as I did, so I had to make it enjoyable for them...if that makes any sense.
Once again, I hope I did not offend anyone in the forum with my statements. I just wanted to get my two cents in as I have given this thread a lot of though beforehand.
Thanks and good luck,
Old English