noun, noun or participle which takes 'suru', intransitive verb
free ride; riding without paying
Refers to riding a train, bus, or other paid service without paying the fare. Can be used literally or figuratively for benefiting without contributing.
彼は電車にただ乗りしようとして捕まった。
He was caught trying to get a free ride on the train.
人の努力にただ乗りするの
It's not good to freeload on other people's efforts.