Body idioms
Head
It's like banging your head against a brick wall; He's got his head in the clouds; An old head on young shoulders
Arm
They're up in arms, I'd give my right arm to do it, He's twisting my arm
Foot
I've got itchy feet; I got cold feet; I shot myself in the foot
Eye
To have eyes in the back of your head; His eyes are bigger than his stomach
Leg
I'm pulling your leg; It cost an arm and a leg;You haven't got a leg to stand on
Hair
I let my hair down; Keep your hair on; I'm tearing my hair out
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Most people walk in and out of your life, but only FRIENDS leave footprints in your heart