| Idiom | Meaning | Example | 
| charley horse | 
soreness in a muscle, cramp in a calf muscle, pull a muscle
 | 
"Did you hurt your leg playing baseball?"
"Yes, I slid into third base and now I have a charley horse."
 | 
| chaser | 
a soft drink to follow a hard drink, a weaker drink
 | 
The old man drank coffee as a chaser for the Irish whisky.
 | 
| chasing rainbows | 
trying to achieve an impossible goal
 | 
Many young actors are chasing rainbows - hoping for fame.
 | 
| chat her up | 
talk to her about a date, talk romantically to her
 | 
If you like Mila, chat her up. Say nice things to her.
 | 
| cheap | 
unwilling to spend money, not generous, tight
 | 
They refuse to buy the boy a decent suit. They're too cheap.
 | 
| cheap drunk | 
(See a cheap drunk)
 | 
 | 
| cheap like borsch | 
not expensive, as cheap as vegetable soup
 | 
I didn't pay much for this jacket. It was cheap like borsch.
 | 
 | borsch may also be spelled borsh, borscht or borshch, showing that we lack an authoritative mapping from the Russian to the English alphabet
 | 
| cheap skate | 
a person who does not pay his share, a tight-ass
 | 
That cheap skate can keep his money. I'll pay for the tickets.
 | 
| cheat on | 
break a marriage promise, be unfaithful
 | 
He cheats on his wife. Now he's sleeping with a waitress.
 | 
| check it out | 
inquire, find out about
 | 
Check it out. It may be a great opportunity.
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