Can you think of some body part idioms?

arm twisting
navel-gazing

Pain in the neck
Hair raising
Toffee nosed
Ankle deep
Headstrong
Fingerlickin’
Thumbs up
Knee high to a grasshopper
Eye-level
Belly flop
Nose dive
Leg up

Knee slapper
Rubbernecker if that counts?
Green thumb
Toe curling
Elbow grease

Here’s a huge list of them

Off the top of my head, I can’t. ;)

On the other hand, I might be talking bollocks, or talking out my ass (for the US contingent).

Tongue in cheek
Rule of thumb
Ear splitting
Eye brow raising
Strong arm
Belly laugh
Nose about
Learn by Heart
Yell at the top of one’s lungs

Lead footed.
Thick skinned.

Gut-wrenching.
Spine tingling.

Dickhead

Arsewipe

Bell-end

Muscle Mary

Shit For Brains

Knob Jockey

Can’t tell his arse from his elbow

Arse licker
Fanny fart
Cock nose
Tit head (police)
Elbow grease
Finger lickin good (one for the wife there)

Let me get my foot in the door before this thread closes.

All elbows and assholes.

Butt ugly.

@gailcalled – What does “toffee nosed” mean?

On the tip of your tongue
Having your nose in others’ business
All ears
A shoulder to cry on
Turning the other cheek
To have your hair stand on end
A gut feeling
My lips are sealed
Cross my heart
Up to your eyeballs in _________
By the skin of my teeth

You’re the bee’s knees.

Primarily British slang: snobbish, pretentious or supercilious
Source

Not by the hair of my chinny chin chin.
Sink my teeth into.

Pointing fingers (declaring blame)

I wear my heart on my sleeve

Going toe to toe with someone
Hand to hand combat
Mouth breather
Going ass over head for someone
Butt-ugly
Gaining a foot-hold
Gnashing my teeth
Holding my breath
Bosom-buddy
Tongue-lashing
I’m all ears
A real nail biter
A white-knuckle flight
Having a green thumb
Can’t see eye to eye
Has his finger on the pulse of the country
She has balls
She’s a ball buster

Shit faced.

nosey