"a piece of cake"
Something that is very easy or simple
"let the cat out of the bag"
To tell a secret or spoil a surprise?
"out of the blue"
Something happening without warning or all of a sudden
"under the weather"
Means not feeling well or feeling ill/sick
"slipped my mind"
Someone forgot something
"cost an arm and a leg"
Something that was expensive or cost a lot of money
"sleep on it"
To think about it more or take more time to figure things out
"see eye to eye"
You agree on something or see things the same way?
"when pigs fly"
Means it's never going to happen or something that seems impossible
"hold your horses"
Means to wait a minute or to be patient?
"in hot water"
This means being in trouble
"couch potato"
This mean lazy or laying around all the time
"call it a day"
Means it's time to stop, quit or leave
"all ears"
Means that someone is really listening or paying attention
"a little birdie told me"
Means that someone told me a secret
"get cold feet"
To be nervous or afraid to do something
"could eat a horse"
You are extremely hungry and could eat a lot
"break a leg"
When you wish someone good luck before a performance
"night owl"
Someone that stays up late
"pig out"
Means to eat a lot
"in the same boat"
To be in the same situation
"pulling my leg"
Means playing a trick on me or fooling me
"a rip off"
Means something is way too expensive
"at the drop of the hat"
Without hesitating (waiting) or doing something right away
"raining cats and dogs"
Means that it's raining really hard