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Used to describe behaviour that is particularly rowdy and crazy, usually due to drunkenness. May be abbreviated to 'OTG'.

1. Did you see Mark last night? He was fucking OTG.
2. Dude, last night was off the fucking grill, I am never drinking sambucca again.
3. I'm keen to get off the grill.
by Ollie Phelan May 15, 2008
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