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The type of handjob a guy gets from his good female (or male) friend because, for whatever reason, he is sexually frustrated and requires release. Done as a favor as opposed to an overt sexual act due to attraction.

Note: Not to be confused with a handjob your FWB gives you. Simply put, a platonic friend gives courtesy handjobs the same way friends spot each other for lunch or give each other rides.
"Hey, Alyssa, thanks for that courtesy handjob last night. I hadn't been laid in almost a month and it was killing me. You're the best!"

"Don't mention it John. I mean, what are friends for? But really, don't mention it. To anyone."
by Lupin the 3rd March 20, 2013
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