横の物を縦にもしない
Meanings
1
too lazy to do anything; won't lift a finger
Idiomatic expression describing extreme laziness: someone who won't even turn a horizontal object vertical, i.e., won't do the simplest task. Often used in negative form (~しない). Compare with 縦の物を横にもしない, which has the same meaning.
See also: 縦の物を横にもしない
He's such a lazy person that he won't even lift a finger.
On my day off, I didn't do a single thing and just slept all day.