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Said to someone who is showing off and making themselves out to be a big man. Can also be said as 'What a big man' which it originates from.
"Stop being so what a Louis. No-one is impressed by you!"
by robbie3511 April 18, 2007
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have some of that ‘ .

As in - ‘Whatum ( look what I’ve just done / I’m mighty pleased with myself )
Whatum ! I ain’t done that before
by Tradishe April 13, 2021
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