"as clear as mud" means
something brown
something obvious
something confusing
"to give the green light" means
to forbid something
to like something
to allow something
Break a leg!
Have fun!
Well done!
Good luck!
"to skate on thin ice" means
not to like something you have to do
to do something challenging
to be in a risky situation
"a piece of cake" describes something
very fun
very sweet
very easy
"to cost an arm and a leg" means
something cheap
something of low quality
something expensive
"to pull someone's leg" means
to fool someone
to make someone happy about something
to make someone uncomfortable or anxious
It rings a bell!
It makes a lot of noise
I want to get attention
something sounds familiar
"to be on the ball" means
to be on the top
to be alert
to be funny
"to beat around the bush" means
to take a long time do something
to avoid talking about something
to show disagreement about something
"Once in a blue moon" means
usually
never
rarely
"to speak of the devil" means that
you have an uncomfortable conversation
the person who you were talking about unexpectedly arrives
you talk about a person you don't like
"to be under the weather" means
to be sad
to be strong
to be ill
"to take the plunge" means
to commit to a decision (often one that makes you nervous)
to fall down (from a very high place)
to make a choice (especially between two similar options)
"to put your feet up" means
to be tired
to relax
to be clumsy
"to be left out in the cold" means
to be excluded
to be alone
to be freezing
"to get cold feet" means
to change your mind about something because you are nervous
o be anxious about something
suddenly change your emotion eg. from happy to sad