Hands down
Without competition.
To keep someone's chin up
To be happy.
To get a slap on the wrist
Give someone a mild punishment.
To be as sick as a dog
To be very sick.
To be Greek to somebody
To be impossible to understand.
To pull someone's leg
To be just joking.
Rise and shine
Wake up and be happy!
To hold someone's horses
To be patient and wait.
To be tickled pink
To be very happy.
To cost an arm and a leg
To be very expensive.
To be a loose cannon
To be unpredictable.
Close, but no cigar
You were close, but you didn't make it.
To be or feel under the weather
To not feel well.
To be/feel down in the dumps
To be or feel sad or depressed.
To be in the same boat
To be in the same position or unpleasant situation as other people.
Till the cows come home
For a very long time.