To dress in a satiric way, using humorous or absurd accessories to lighten a grave situation. It is a portmanteau of the words 'sartorial' and 'satirical.'
Bill lightened the mood in the emergency department by wearing pink polkadot socks with his blood-stained scrubs. He called it being sartirical.
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."