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2.
1. To consume without asking.

2. The act of drinking your friends beer and buying your own once a month.
That guy just took a beer, he didn't even pay he's totally shaning.

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by TheJamesGang November 25, 2010
 
1.
Irish Slang word for lady-peeing
God one of the lads told me he is always shaning
by themudfactor February 26, 2008