Well, I was asked once before. Two friends of mine got married in Ohio many years ago, and I was asked about 30 minutes before the ceremony if the best man didn't show up, would I take his place? He was very late, and no one had seen or heard from him. But before I could take on the sacred mantle, the best man DID make an appearance at the last minute, and so I was just an average Joe sitting in the pews. I have to admit, I was a little bummed, but still grateful and humbled that I was asked.
But to take a bride down the aisle! You know, I don't have a daughter to give away. This is as close as it's gonna get. I hope I don't lose it and bawl. I am such a wuss.