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1.
First of all the couple has to have the names sarah and chip(nathan). Second they have two enjoy back scratches.

Sarahnating- When sarah scratches her significant other's(chip) back in such a way that would lead to sex. This type of seduction works 100% of the time half the time.
Chip and Sarah can give you a good example of Sarahnating. O MAN SBEECH!
by Austin Wells April 07, 2008