A humorous and perfectly cromulent portmanteau of "
sarcastic" and "
fantastical." That which is sartastical is fantastically
sarcastic, or indicative of extravagantly fanciful sarcasm.
Person A: "Problematical is a perfectly cromulent
word."
Person B: "It embiggens
even the poorest writers among us."
Person C: "That's ironical, isn't it?"
Person D: "
Actually, that's sartastical."