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Blake Shelton has a reputation for causing a stir on Twitter.  But he didn't start his battle with the Westboro Baptist Church. The two began exchanging barbs Wednesday, when Westboro announced plans to picket the country star's October 3rd concert in Kansas City, Missouri. 

Westboro revealed their intentions with a tweet claiming they "know BS" when they "see it."  The message included an attached graphic explaining that Shelton's divorce from his first wife and subsequent marriage to current wife Miranda Lambert has led gay people to "think it's OK to marry." 

See the tweet here

Shelton retaliated with a less than wholesome response, leading to a string of more colorful exchanges.  And the war doesn't appear to be over just yet.  Westboro is promising to post a "parody" of Shelton's hit "God Gave Me You."