One never knows when one might drop one's guts, so it's best to be cautious about what you eat.

The research facility used one-way mirrors to observe the volunteers without disturbing them.

Seeing the modern glass addition to the cathedral, the city's founding bishop turns in one's grave.

Anyone who cared about his legacy is turning in one's grave at how they've commercialized his work.

Many readers felt that, if the author knew how his words were being used, he turned in one's grave.

When hiking under the low branches, it's easy to ring one's bell on a branch if you're not careful.

One shook one's head at the absurdity of the suggestion.

A parent shakes one's head when a child refuses to wear a coat.

Crossing one's fingers, the candidate hit send on the application and silently wished for good news.

One crossed one's fingers silently as the letter was opened, hoping for good news.