About a decade ago I actually saw someone suffer a psychotic break.
His main "debate" strategy involved copying & pasting material from other websites, tossing in his personal spin, and calling it a day.
Suffice to say that he was completely unprepared for the prospect of people responding to him, let alone people going point-by-point and responding to the individual statements.
All he could do was respond by spamming more and more copied & pasted materials. Past a certain point, it became apparent that there was an inverse relationship between the amount of pasted material and the coherency of his personal statements. By the time he ran out of material to copy, he was so full of fury and pride as to be on the edge of incoherence and rage.