Top Definition
Abbreviated - PNS - A slang word for Post-coital tristesse. An issue that has been plaguing men since the dawn of time. It's the feelings of anxiety, depression, sadness, empathy, regret, etc, that one gets after busting a nut. Normally the condition is more severe depending on the sexual circumstances. It is caused by a decrease in dopamine receptors immediately after ejaculation.
- A guy finishes after banging a girl he just met at a bar. He immediately gets Post Nut Syndrome. He wants to just get out of there as soon as possible.

- You finish masturbating to an a kinky beastiality porn on your computer. Post Nut Syndrome comes on very quickly and you clear your web history and go make a milkshake.
by November 30, 2011
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