thick

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Related to as thick as two short planks: show someone up
References in periodicals archive ?
How dare she blame parents for criminals and drug dealers and say we are as thick as two short planks.
When are TV bosses going to realise that women like Kelly who look spectacular but are as thick as two short planks don't make good presenters?
He looked as thick as two short planks when asked to go forward but, when the penny finally did drop, he shot to the front inside the last to score by three and a quarter lengths from Lord Ofthe Shadows.