Friendship between women: A woman doesn't come home one night.
The next morning she tells her husband that she had slept over at a friends house. The man calls his wife's 10 best friends. None of them knew anything about it.
Friendship between men: A man doesn't come home one night.
The next morning he tells his wife that he had slept over at a friends house. The woman calls her husbands 10 best friends, 8 of which confirmed that he had slept over, and 2 said that he was still there!
Yup, that is the difference between men and women. This bit of funny was sent to me by my buddy Chris.