Best man speech, hints and tips?

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I've got my younger brothers wedding coming up, on Saturday, as his best man I thought it best I should cobble together a speech.

Having never done this before and not really being one for attending a great number of weddings I've not spent a lot of time listening to speeches, so any tips or tricks?

 

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Cheers for the tips guys

Spooky, my Bro is called Dave...

I'm going to jot a few ideas down during the day and attempt to write something up tonight. Any idea how long a speech is expected to last? I would have thought 3 to 4 mins?

 

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There was a young woman from China,
Who had a massive .....

start with that one

As he's marrying a Chinese girl I'm not sure that'd go down well but would be very fitting!