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Knowingly giving a STD to some bitch hoping that she will then pass it on to douche bag you hate.
Guy A: I'm pretty sure I gave Jenny the clap last night. Hopefully she is still sleeping with that jackass Tom.

Guy B: Wow, way to poison the waterhole. I won't be drinking from that well any time soon.
by Johnny Appleseeds January 14, 2008
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2
To ejaculate into ones own, or anothers belly button (Navel). Extra points are done if you can just get a quick squirt in without overflowing it.
Edward: fucking hell jeremy what took you so long on the shitter?

Jeremy: i had to have a few tries to poison the waterhole.
by Alex Dundizzle December 13, 2007
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