Michael gives an incredibly awkward, long-winded toast that eventually leads to him being kicked out of the reception. He also jumps the gun by announcing the couple as "Mr. and Mrs. Bob Vance" before they are even married.
Despite his behavior, Michael has a small moment of redemption at the end of the night when he sits and talks with the lost Uncle Al in the parking lot. [S3E16] Phyllis' Wedding
In his speech, Michael famously confuses "wedding" with "welding," stating that Webster's Dictionary defines wedding as "the fusing of two metals with a hot torch". Michael gives an incredibly awkward, long-winded toast that