The following sentences contain idioms. The fixed words constituting the idiom in each case are bolded:[3]
a. She is pulling my leg. - to pull someone's leg means to trick them by telling them something untrue.
b. When will you drop them a line? - to drop someone a line means to send a note to or call someone.
c. You should keep an eye out for that. - to keep an eye out for something means to maintain awareness of it so that you notice it as it occurs.
d. I can't keep my head above water. - to keep one's head above water means to manage a situation.
e. It's raining cats and dogs. - to rain cats and dogs means to rain very heavily (a downpour).
f. Oh no! You spilled the beans! - to spill the beans means to let out a secret.
g. Why are you feeling blue? - to feel blue means to feel sad.
h. That jacket costs an arm and a leg. – an arm and a leg means something is very expensive.
i. It is not rocket science. – not rocket science means something is not difficult.
j. Put a cork in it. - put a cork in it is an impolite way to say, "shut up!" (another idiom), be quiet, and stop talking.
k. I'm screwed . - to be screwed means that one is doomed, is in big trouble, or has really messed up.