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A 'cullis' is someone who is generally considered to be cool - often the 'top dog' of a social group, and someone who is popular and well-liked by all.
Importantly they are modest and believe in being kind and nice to everyone, and aren't overly arrogant.
A term mainly used in South England at the moment
'Oh that guy's so cool!'

'Joe Bloggs? Yeah he's a cullis'
by ratchet-9 April 20, 2010
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