If you can do things with your hands while you're talking and thinking, it's a great help.

You go on eating.

I'll show her up!" Barouche smiled maliciously.

"Well, show her up, Gaspard." The servant laughed.

"Perhaps she'll show herself up after I show her in," he said, and he went out hastily.
Presently the door opened again, and Gaspard stepped inside.
"A lady to see you, m'sieu'," he said.
Barouche rose from the table, but he did not hold out his hand.