Elsie,
Sorry, I was wrong on the number of Methodists. The term Methodists include a number of denomination's worldwide. If you include all the Methodists in all the other denominations there could be as many as 80 million. The United Methodists, which is what most of us think of as Methodists have about 7 million members in the US and about 12 million worldwide.
If Mormonism is not true then nobody has been “Dead Dunked” I have never heard of anyone taking a dead body and “dunking” it. If The Mormons have a ritual that includes a dead persons name being said who cares? Or perhaps I should say Why would anyone care?