1.   He gave us a knowing look.

2.   Dan exchanged a knowing look with Harry.

3.   Exchanged a knowing look with her business partner during the sales presentation.

4.   The girl had a knowing look.

5.   - While reporting Chuck and Di wars, they exchange knowing looks.

6.   A firm hand shake, an arm around the shoulders, a knowing look can say all that needs to be said.

7.   A sweetly knowing look crosses the face of the lovely young Miranda.

8.   Accompany this assertion with a knowing look, apparently dense with meaning, but in fact meaning nothing at all.

9.   Jokes and knowing looks were lost on me.