Male masturbation to images/videos/sounds/thoughts of a female he doesn't find particularly attractive, but feels he's doing her a favor by the act.
I'd never hook up with her, but I bet she'd be happy to know I pity-jerk to her pic every now and then.
by Nerdmaster July 28, 2009
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When a girl does something for a guy (or visa versa) because she feels bad for him.
Example 1

Jessica: I saw you with Mark last night, why were you with that loser??

Rebecca: I was giving him a pity jerk

Example 2

Jon: Why did you like Samantha's new pic, you know she's a huge loser right?

Matt: It was a pity jerk man.
by In your mom's DMs August 30, 2019
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