Huge rugby tournament for males and females in Nashville. This tournament has been happening every year in March for 29 years. It's a fun way to socialize because many teams drink before and after the games with other teams.
Did you go to Nash Bash last year?

Yeah, I got completely hammered before the game and broke my leg on the pitch. I can't wait to go back!
by juker355 February 19, 2012
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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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Being hit in the eye with a penis during or directly after giving it oral sex, typically used when followed by a "Nash Splash".
So I was going down on this guy and at the last minute he gave me a Nash Bash and a Nash Splash. Its gone all red so now I've gotta go to the optician's.
by Mogzy G August 7, 2011
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A party/bash in Nashville

A country music festival

A rugby tournament

A bachelorette party in Nashville
We're having a Nash Bash trip this weekend.
by May 3, 2022
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