Friendship, Men vs. Women:

Friendship Among Women:
A woman didn't come home one night. The next day she told her husband that she had slept over at a girlfriend's house. The man called his wife's 10 best friends. Not one of them knew anything about it.
Friendship Among Men:
A man didn't come home one night. The next day he told his wife that he had slept over at a buddy's house. The woman called her husband's 10 best friends. Eight of them confirmed that he had slept over, and two claimed that he was still there.