This works in the same way as other debates, in that you say something that negates (or contradicts and defeats) the previous post. You may say something that physically defeats it in real life. If you cannot defeat it, say something entirely unrelated.
One more rule: Your post must consist of one word! NOW TEN WORD LIMIT!!!
(However, adding words like "is", "not", "are", "the" and "uses/used/use/using"(or any action like "wearing") are exceptions to this rule.
And another: no using religion as an answer because differing viewpoints will question its validity/authenticity.
TL;DR, follow what everyone else is doing and hope you get it right.
I shall start:
Helicopter.
