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1.
A crazy sport whereby the participants run, tumble and fall down large sand dunes. The sport has a rich history going back over 30 years. Especially popular on the West coast of Northland, New Zealand.
Johnny, are you going to join us for an afternoon of gullying with the boys?
by Kiwiboiii June 05, 2011
 
2.
A sexual act with very loose definitions and uncertain origin. Accepted to mean the practice of rubbing (male or female) genitals against each other to illicit pleasure.
Guy: 'Did you get laid last night man?'
Guy's friend: 'Nah she wouldn't put out so I just got some gullying.'
by Thefixer31 May 10, 2011