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1 definition by Chowgz

To drink alcohol in excess and at a very fast rate. Performed with the intention of getting rat arsed as quickly as possible.
I haven't had a drink since we got in this morning. Let's go smash some piss, Jonaldhino.

I really feel like smashing piss right now.

We smashed a lot of piss last night.

I can't wait to smash piss again tonight.
by Chowgz February 09, 2007