He laughed at my expression of dismay and laid it upon the table.

Brian laughed at his expression and pointed to the other end of the lab.

She saw her words strike home and laughed at his crestfallen expression.

If the situation had been a bit less serious, she'd have laughed at his expression of flat-footed surprise.

He laughed again at the earl's expression and leaned back in his chair.

If Elspeth hadn't felt the same way, she'd have laughed at his expression.

"I saved my trip home," she said, and laughed at his expression.

She laughed at my expression, then slapped her flat belly.

When he turned back around, he laughed at George's expression.

Laughing at his stunned expression, she rose and went to her father.