Barmecidal

Barmecide is the name of a family of princes in a tale from The Thousand and One Nights (also known as The Arabian Nights' Entertainment). One prince in the family torments a beggar by inviting him to a fabulous feast, at which all the dishes are imaginary. The poor man plays along with his malicious host, pretending to get drunk on the imaginary wine; he then gets even by knocking down the patronizing royal.