What is Grundaberries?
1.
Men's briefs. Derived from "Reg Grundies" - Australian slang for undies or underwear - and from the concept of storing your berries (testicles).
Also known as sluggos, or budgie smugglers.
These grundaberries are too tight. I hope it doesn't affect my sperm count.
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Something that has no chance of happening.
This definition having all thumbs-up is an impossibility.
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1.
The act of prolapsing your sexual partners asshole, then whacking it with a penis or fist until it retracts itself back into the body. R..