myputer - your husband should just say whatever he feels like saying at the time, it isn't exactly something that you would really prepare.... I'm sure that his friend made him his best man knowing that he would follow through and that he might know him well enough to not have to prepare
Nonetheless
Here are some points that he might want to touch on
1)How the friendship is (how long he's known the groom, etc, stories of their times together)
2)Talk about the wonderful occasion and what a great time everybody is having
3)Wish the couple the best of luck
Short, simple, effective
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