The initial idioms of the letter C

catch (one) napping	catch (someone) by surprise
catch (someone) flat-footed	catch (someone) off balance
catch (someone's) drift	catch (the) headlines
Catch 22	catch a break
catch a buzz	catch a cold
catch a crab	catch some rays
catch sight of	catch a snooze
catch a tan	catch a Tartar
whiff of	catch air
catch as catch can	catch at a bad time
catch at (a) straw(s)	catch dead to rights
catch big air	catch breath
have (someone) by the short hairs	catch cold
catch death	catch death!
catch at	get drift