A thrusting technique involving a violent revolving of the penis in the vagina, often with the use of a steel or iron penis ring or vibrator, which creates a cold, cheese grater like feeling for the woman. If she's a masochist this is the perfect technique to get MAXIMUM results.
Dude, it wasn't my choice, and it was quite painful, but my girlfriend loved the iron tornado; although I don't think she will be ready for another round anytime soon.
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