1.   The barmaid slapped her knees and did just that.

2.   And we can now slap our knees as well!

3.   Also slap the knee, because this sidelong, poison-tipped political satire is discreetly hilarious through and through.

4.   Costner smiled and gently slapped his knee with one hand as the scene ended.

5.   Did nary a knee get slapped?

6.   Ford rubs her hands together and slaps a knee.

7.   He and his friend slapped their knees at the humor of it.

8.   Howard slapped his knee and a huge grin spread across his face.

9.   I looked across at Mr. Shades, my fellow passenger, who by now was slapping his knees in time.

10.   In his hotel room, Dole was beaming and slapping his knee, and at one point, Jack Kemp grabbed his hand in jubilation.