If the responsibility of delivering one of the speeches in a much-planned wedding ceremony falls on your shoulders, be very proud because you're the man! As best man, you can prove to the groom that he chose the right person to speak before his family and friends.
Don't botch the opportunity to highlight the good points of the newlyweds through your best man wedding toast.
You can inject some humor and/or witty lines.
Bear in mind that it is not the time to focus on yourself, but on a couple (who trusted you enough to make you the best man) who have committed to spend their lives together.
Never upstage the newlyweds, even if you're super amusing and stirring speaker.
Bear in mind also that even if you do not know the bride very well, you need not draw attention to it, and never forget the bride and groom's names.
A good best man wedding toast speaks volumes about the newlyweds in as few words as possible.
Introduce yourself first and how you are related to the groom and bride, then mention your best moments shared with the groom (if you're his brother, there will be plenty, so select the most noteworthy memories), before proceeding to how the groom met his bride and how the match brings out the best in them.
Then without further ado, ask the audience to join you in raising a glass to the delighted couple.
You can end your best man wedding toast by expressing in one quick statement your sincerest wishes and congratulations.
You can be funny (but not at the expense of the bride and groom nor at their families and guests) or poignant, but keep the best man wedding toast simple, sincere and sweet.