Wow this was all an eyefull to read (I'm not gay. There, got that out of the way).
I can't even remember now what the original question was, so I apologize if this response isn't right on target. (I'm not gay after all)
It all just reminds me of the comment that goes something like "to those that don't understand/believe, no explanation will suffice; to those who do, no explanation is necessary." .... or something like that. (I might remember it better, but I'm not gay.)
I've said before in other threads that I grew up in and still belong to a tickly family. Cousins tickled each other (male or female... and usually males, cuz you were more likely to be rough housing with a boy cousin, but we were all straight. Thought I was gonna say I wasn't gay huh?). I had tickly friends. Again, more likley to be wrestling and tumbling with one of my guy buddies on the playground.
When I was in Junior high, it was almost a daily sight to see someone (usually female), being tickled silly (usually by a guy but not always). In case your forgot I'm not gay. Of course there was a flirty aspect to tickling a girl, or vice versa, but mostly, it was just a funny, silly way to pass the time. Lunch time in the quad? Bored? Someone with their back to you? *POKE* *SQEEEAAAALLLL* Laughter from all ensues.
One of the funniest memories I have is of one of my friends, with his back to a big concrete pillar, and his arms pulled back on either side holding him in place. Apparently he'd mouthed off to some of the larger guys and after chasing him, and catching him had him in this predicament. Now they were all good friends mind you, and 3 took turns alternately punching his legs (think Charlie Murphy on Rick James after he ground his feet into Eddie's sofa..), and tickling the hell outta him. He was hopelessly ticklish, and wow he'd be trying to say "OWWW" from the hits, he'd just shriek with laughter from the tickling. This was hilarious being as I'm not gay.
All of this is to say, (aside from the perfectly homophobe-free observation that I'm not gay)
-Break- All this junior high recollecting is further exacerbated by the fact that Klymaxx's "I Miss You" just came on. Ugh... do you know how much me and my non-gay tickly friends loved this song????
-Unbreak- As I was saying, because of my experiences and my uniqueness I suppose, first and foremost, I view and relate to tickling as a fun, sweet, innocent way of communicating and connecting to someone. It is a very SPECIAL way of doing those things. (there should be a proclamation of not being gay here, but I'm getting sick of trying to be funny, so from now on, the I'm not gay proclamation shall be noted by an asterisk. aka *) It may also bear mentioning that I'm one of those freaky people that can separate sexual tickling from non-sexual tickling without even trying to.
Now, about this M/M stuff. I do recall reading somewhere in a book that generally (American culture), adult men do not tickle each other, unless there is some sort of intimate relationship. * No, not only THAT kinda intimate relationship, but like a real closeness - say that of brothers or teammates, etc. I'd have to say that's generally true of what I've experienced. Brothers...cousins, frat brothers and so on. Even then, it's typically a quick teasing tickle. Usually not prolonged.
Of course we all know that women are typically more physically expressive with each other than men. Some of this actually reminds me of something mentioned in the Breastfeeding thread - as far as society being conditioned to associate one thing with another - breasts with sex; certain touches with intimate advances. There's probably a little of that going on with tickling. Especially if it's prolonged. * I mean afterall, what possible reason could someone have for tickling ANYONE more than a few seconds? I mean, unless they wanted to have sex with them right?
And so, as someone who's seen M/M tickling all my life. Seen it in person as an adult. Participated in it, briefly because you know *. What can I say, sometimes there's just a foot that needs a tickle, and you don't have to worry about the person receiving it taking it the wrong way. Sometimes a guy likes knowing another guy care for him to.
I can't speak for everyone, but I will throw some things out there. When it comes to the nature of clips and stories, as others have mentioned, there's a definite sexual overtone to them. But within that, there are so many layers there. For one person, it might be arousing to simply see a bare female belly, because that fires up the tickle desire, and seeing that belly tickled may fufill the urge to some degree. Another, the bound soles of woman might do it. Personally, the bound soles of a man is...well yuck! LOL An exposed belly is... maybe not yuck, but maybe uck. I imagine it's similar for most who *. In and of themselves, men's body parts are just that, parts. But in terms of bondage and or tickling...eehhh, it's almost like seeing the preview for a movie you KNOW you don't want to see.
I guess the best way I can explain it is like this: I don't like going to dungeons/s&m clubs, because of all the transvestites frequenting a lot of them. Now I could care less about them and what they do. * The issue I have, is that I'll see high heels and stockings out of the corner of my eye, and get a little tingle of joy at the anticpation of seeing the fetching woman attached to them, only to find the woman is not THAT kinda woman (i.e. sans penis). I'm simply too conditioned to associating heels and nylons to women. I can't make my brain stop it. I see the legs, and think yippee...but then the let down. Mind you, MY letdown, has nothing to do with one's right for self-expression, so that's MY issue, not theirs. But it is what it is.
Anyway, I suppose, as far as those folks who constantly have something negative to say about M/M, I suspect they just don't have anything better to do, and certainly don't have enough things in their life that bring them enough joy. Those that suppose it can be nothing but homosexual * simply have not have enough experiences, exposure, or have such a small view of the world views and thoughts to the contrary are too large to enter it. And in regards to the M/M vs F/F - Is there any better definition than Jonmath's?