That's a knee-slapper!

effiesmom May 1, 2002, 11:29pm 1

Why do people slap their knees when they laugh hard? What evolutionary purpose could this serve?

Topic		Replies	Views
Knee-slapper and another humor question Factual Questions	3	1227	March 11, 2018
What is the purpose of laughter? Factual Questions	1	819	June 5, 2005
why do we laugh? Factual Questions	5	800	July 23, 2000
Why does knuckle-cracking feel good? Factual Questions	1	1619	December 13, 1999
Where does laughter come? Factual Questions	1	685	May 8, 2001