Appeal to ridicule

Appeal to ridicule (also called appeal to mockery, ab absurdo, or the horse laugh^[1]), is an informal fallacy which presents an opponent's argument as absurd, ridiculous, or in any way humorous, to the specific end of a foregone conclusion that the argument lacks any substance which would merit consideration.

Appeal to ridicule is often found in the form of comparing a nuanced circumstance or argument to a laughably commonplace occurrence or to some other irrelevancy on the basis of comedic timing, wordplay, or making an opponent and their argument the object of a joke. This is a rhetorical tactic that mocks an opponent's argument or standpoint, attempting to inspire an emotional reaction (making it a type of appeal to emotion) in the audience and to highlight any counter-intuitive aspects of that argument, making it appear foolish and contrary to common sense. This is typically done by making a mockery of the argument's foundation that represents it in an uncharitable and oversimplified way.

References

1. Brooke Noel Moore and Richard Parker, Critical Thinking, McGraw-Hill, 2000, p. 526.