- The definition of marriage has always implied man-and-woman.
- Therefore, if the government recognizes gay marriage, the government is redefining a word.
- If we let the government change the definition of words, anything can happen!
- Therefore, no gay marriage.
Does anyone expect this to cause people, who claimed that argument as their reason for opposing gay marriage, to now change their mind? Of course not... nobody really thinks that argument ever made sense.