1 definition by ZarryEd

Top Definition
When a guy hits their partner with his penis in their eye, but only when receiving or just finished receiving a blow job.

This generally hurts quite a bit as it takes the other person by surprise and is known as a precursor to the Nash Splash, though once a Nash Bash has occurred there is little time for the partner to escape before the Splash happens.
Guy 1: So did you get anywhere with Jenny last night?

Guy 2: Yeeah, it was awesome. She was going down on me and wanted me to warn her when I was going to spurt, so I did, cept then I gave her a nash bash for being cheeky and not swallowing.

Guy 1: Sweet dude.
by ZarryEd October 20, 2011

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