verb; short for "grinding one out". This is what a guy tells his friends in the presence of a member of the opposite sex as to not advertise that they need to go #2 in a public and potentially embarrasing place. Caution: Female will ask what was just said. It is the friends job to quickly change the subject and keep her busy so she doesn't suspect where you have gone for longer than it takes to piss.
"I need to G1O"
by wizard sleeve January 16, 2009
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