clunker

clunker/junker

to clutch at straws

to clutch at a straw

He coasts through every exam

coat of paint

to cobble something together

A cobbler should stick to his last

cobweb site

to cock up

cock and bull story

cock-a-doodle-doo

to cock a snook at someone

to cock a snook

to be cock-a-hoop

to be cock of the walk

cock

A cock is valiant on his own dunghill.

cock-eyed

cock-up

a cock on his dunghill

at cock-crow

to cock one’s head

cockaigne/El Dorado

cockamamie