Top Definition

Used to describe, or to refer to any form of general laddish, outlandish or outrageous behaviour, or to show one's intentions of exhibiting such behaviour.

Can also be shortened to the acronym - GITBO (pronounced GIT-BO)
"Dom is looking forward to giving it the big one at Neil's stag do this weekend."
#giving it the big one #gitbo #ladding about #laddish behaviour #lads on tour #outlandish behaviour
by Lavisse December 26, 2010
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