paint

like watching paint dry (of an activity or experience) extremely boring.

not as black as you are painted: seeblack.

paint the Forth Bridge used to indicate that a task can never be completed.

☞ The steel structure of the Forth Railway Bridge in Scotland has required continuous repainting: it is so long that once the painters reach one end, they have to begin again at the other.

paint the town red go out and enjoy yourself flamboyantly. informal

paint yourself into a corner leave yourself no means of escape or room to manoeuvre.