Nutlash - The process of being slapped by a massive nutsack large enough to cause massive damage and blunt force trauma. Similar to whiplash, but the cause of the injury is due to a large nutsack slapping you.
Emma: Hey Jo, can you pick me up from the hospital? I was nutlashed.

Jo: Wtf? You've been what??

Emma: I was with my boyfriend last night in bed going crazy and I didn't know his nutsack was so fucking massive. He slammed it against me and fractured my ribcage giving me nutlash
by BuffSquirrel June 12, 2021
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