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?
They're talking to us in that patronising way which assumes we're all as thick as two short planks.