You have to hold onto them. They bump into things. They laugh and cry. They urinate. They vomit.

他们走路要你扶，走着走着就会撞上，还又哭又笑，随地小便，会呕吐。

youdao

In such cases, the airline is entitled to 'bump' passengers onto a later flight.

BBC: Q&A: Air passengers' rights

You're surfing around the internet, and you bump into things because it's linked, and you fumble onto new stories or new ideas or things that you didn't think would interest you, but now they do.

NPR: Tips for Easing Internet Information Overload

Engineers told the New York Times that the forays onto the highways have been largely incident-free, apart from one bump when the car was reportedly hit from behind at a traffic light.

BBC: Google tests cars that drive themselves