It's wildly irritating to have invented something as revolutionary as sarcasm, only to have it abused by amateurs.

That's the difference between irony and sarcasm. Irony can be spontaneous, while sarcasm requires volition. You have to create sarcasm.

Sarcasm will make your tits fall off.

It’s sarcasm, Josh.”

“Sarcasm?”

“It’s from the Greek, sarkasmos. To bite the lips. It means that you aren’t really saying what you mean, but people will get your point. I invented it, Bartholomew named it.”

“Well, if the village idiot named it, I’m sure it’s a good thing.”

“There you go, you got it.”

“Got what?”

“Sarcasm.”

“No, I meant it.”

“Sure you did.”

“Is that sarcasm?”

“Irony, I think.”

“What’s the difference?”

“I haven’t the slightest idea.”

“So you’re being ironic now, right?”

“No, I really don’t know.”

“Maybe you should ask the idiot.”

“Now you’ve got it.”

“What?”

“Sarcasm.

This is what happened in love. One of you cried a lot and then both of you grew sarcastic.

Eragon went to see the dragon for the first time since it had spoken to him. He approached apprehensively, aware now that it was an equal.
"Eragon."
"Is that all you can say?" he snapped.
"Yes."
His eyes widened at the unexpected reply, and he sat down roughly.
Now it has a sense of humor. What next?