During Anal sex, when you're about to cum, you pull out to shoot. But a little nugget of impacted poop is blocking your urethra.

So finally you blow and the nugget shoots out like a musket ball followed by warm spray.
Last Night, Grace let me in her back door. When it came time to unholster my dick, I pulled out and fired a Dutch Musket at her head!
by SharkFighter October 26, 2013
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