I had never heard the word "tribbing" before and did a search. The explanation on Wiki is fun, but that they bother putting black and white diagrams is hilarious. Needless to say, NSFW if you look it up. And yes, I find this act for women hot.
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Lol okay, only asking because I was going to make a thread on this earlier, I saw on my finaces computer that she had visited a p*rn site. And I was like Couldn't beleive it. She got embarressed of course and said she just was interested and couldn't sleep. I think it was funny and kind of cute because she seemed so innocent. Anyways I thought it was interesting and nothing to be embaressed about..
Also, you need to try and cultivate that interest. My wife thinks it's borderline infidelity. Edit: Why? WHY? Dude. The girl enjoys watching p*rn. Think of the good times that can roll from that.