This took his mind off the painful subject of Zambia.

It must be a painful subject for him to talk about.

Well, forgive the painful subject, but we recently lost our cargo chief.

And thank you so much for bringing up such a painful subject.

"I can remember everything," he replied, wishing that the other would change to a less painful subject.

Walking the ball park is a painful subject for Baylor.

The referendum and its consequences are, as you may guess, a rather painful subject for me.

Many parents dread being asked about death because it is such a painful and difficult subject.

"I thought it might be a painful subject for you," she said gently.

I don't know why not, except that it was clearly a painful subject for her.