After the first time they have sex together, a guy calls or emails the girl to say something nice and prevent her from feeling cheap.

Can also mean spending time on the phone or in-person during a later friendly date (not leading to sex) listening to the girl's problems.
Fred: Is Josh still on the phone with Becky ? It's been like an hour.

Bill: Is Becky the girl he banged the other day?

Fred: That's the one.

Bill: After-sales service.

Fred: Hope he didn't offer an extended warranty.
by Trickypat March 28, 2010
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