To ring a bell
To get attention
Something that makes a lot of noise
Something that sounds familiar
'A piece of cake' to describe something
very easy
very funny
very sweet
To pull someone's leg
to fool someone or to joke with someone
to make someone uncomfortable or anxious
to make someone happy about something
to be on the ball
to be alert
to be on top
to be funny
To skate on thin ice
to not like something you have to do
to do something challeging
to be in a risky situation
To give the green light
to prohibit something
to like something
to allow something
Once in a blue moon
never
usually
rarely
To beat around the bush
to avoid talking about something
to show disagreement about something
to take a long time to do something
To be left in the cold
to be freezing
to be excluded
to be alone
To break a leg
to do a job well done
to have good luck
to have fun
To put your feet up
to be tired
to relax
to be clumsy
As clear as mud
something confusing
something brown
something obvious
To get cold feet
to be anxious about something
suddenly change your emotion eg: happy to sad
suddenly change your mind about sth because yo're nervous
To Speak of the Devil
to have an uncomfortable conversation
the person who were talking about unexpectedly arrives
to talk about a person you don't like.
To take the plunge
To commit to a decision (often one that makes you nervous)
To make a choice (especially between two similar options
To fall down (from a very high place)
To be under the weather
to be sad
to be strong
to be ill
To cost an arm and a leg
Something of low quality
something expensive
Something cheap
To bite a bullet
to do something that makes you nervous
to make yourself do something difficult or unpleasant
to do something that makes someone else uncomfortable