Calendar year
Can't cut the mustard
Can't think straight
Canteen culture
Carbon footprint
Carpe diem
Cast iron stomach
Cat got your tongue?
Caught between two stools
Caught by the short hairs (or short and curlies)
Chaise Lounge
Charley horse
Chasing tail
Cheek by jowl
Cherry ripe
Chew someone out
Chicken feed
Children should be seen and not heard
China plate
Chip on your shoulder
Chow down
City bike
Click bait
Close but no cigar
Cloud cuckoo land
Cock and bull story
Code monkey
Cold enough to freeze the balls off a brass monkey
Come hell or high water
Comfort women
Company man
Cop an attitude
Corduroy road
Country house hotel
Crack someone up
Cream crackered
Cross that bridge when you come to it
Cross your fingers
Crunch time
Cry wolf
Curiosity killed the cat
Currant bun
Cut corners
Cut to the chase
© Gary Martin