Appeal to the Stone

Appeal to the Stone is a fallacy in which a person simply dismisses a claim as absurd. The person does not provide proof for its absurdity or provide an explanation as to why the claim is inaccurate. The claim is simply considered wrong with no evidence to back the statement up. This fallacy is used all of the time and encountered in daily conversation. For example, in a casual conversation with a friend I might say “No way! I do not believe that” in response to something such as “I met God the other day; she’s a woman.” This statement is absurd based solely on the fact that it would be very difficult for the person to prove that specific claim.
The following example displays the “Appeal to Stone” Fallacy because the response to the given statement is simply not accepting based on no proof or knowledge.
Girl #1: “In 2020 there will be flying cars.”
Girl #2: “That’s crazy.”
Girl #1: “Why is that crazy?”
Girl #2: “It just is crazy.” 
https://www.youtube.com/watch?v=1dta_7NtgFA