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1) Tongue on clit most women love it. Some do NOT! I know a lady that likes tongue on hood as tongue on clit is too much stimulation. She cums tonque on hood... she told me which helped a lot.
2) Sucking on clit. This can really send some women over the edge if they like a bit more than tongue flicking.
3) Stick your tongue out and rub it on her clit like its your job. Have her grind on your tongue. This makes the women that love flicking go nuts most of the time.
4) Nibbling or biting.... most women hate this, but some really love it. Ask her if she needs more or less pressure and proceed cautiously. Some women really do find pleasure in a bit of pain.
5) FIV or FIA while doing any of the above. For some women this will help send them over the edge. It's hard to two finger the g spot and lick / suck clit but it's worth the effort. FIV for your women that love vag play, only FIA if she is a real greek freak. You can just use your free hand to rub her taint and O region with a wet finger while doing any of the above if FIA is too much.
When tongue flicking try up and down as well as side / side. Most ladies love variety and some like one way more than the other. Circles are hard to lick...
Oh and don't forget to lick the wetness off her entire labia and thighs. I use this time to get AIR! If everything isn't wet, try harder!
When you get really down and dirty don't forget to share you fingers with her. Some women love the taste of their own juices too.
So maybe someday soon, I will be ready to get my face soaked again. I love DATY because for me its foreplay and usually generates a nice ready to be covered.....
Of course this is all fantasy, and I probably don't actually know anything about DATY or O...... DATO is for your really clean Greek freak lady friends