On the tip of my tongue
Can't think of the word you want to say
Use your noodle
use your brain
Bite your tongue
don't say something; usually something bad
Sounds fishy
does not sound right
Bring home the bacon
Earn money
Drag your feet
do something very slowly
Hold your horses
wait
Call it a day
stop working
Money doesn't grow on trees
its too expensive to buy everything they want.
Pay an arm and a leg
Pay a lot of money
Throw in the towel
Give up
Chip in
Help with work or to pay for something
Monkey business
silly or foolish things happening
In a pickle
in trouble
Straight face
Not laughing or smiling
Took the words our of my mouth
say what someone else is thinking before he can say it himself
Butter someone up
Compliment someone to get what you want.
Behind someone's back
do or say something when someone doesn't know it; usually something bad.