system
A chat on subreddit /r/me_irl
human
Sarcasm.  The shitty ‘humour’ where you just type the opposite of what you mean, or something completely absurd to ‘make a point’.  It’s been derailing conversations since the dawn of language.  And its use is on the rise.
gpt
I must admit I was as being sarcastic. But I do completely agree with you overall I also hate sarcasm and find it idiotic.