choose an idiom--- any idiom!
'thick as two short planks'
'knight in shining armour'
'written all over your face'
'get your ducks in a row'
'penny for your thoughts'
'jump at your own shadow'
'in one ear and out the other'
'heard it through the grapevine'
'burn the candle at both ends'
'take the bull by the horns'
'thinking outside the box'