Recently, the method of summoning a demon came into my hands.
It basically involves an overdose of Bacchian pleasures.
Using the most sinister magical potions of Kronenburgus, and Smirnoff Iceus mixed together to make the outrageously twisted Power Shandyus, I attained access to the higher spiritual level needed to begin the invocation.
The invocation begins in earnest when thou dost consumes the foulest of the foul known as the sacrificial spiced poultry, or Chicken Madras a la cheap post Inn curry.
Upon sleeping through the night after the consumption of this most testing of concoctions, thou will truly awake at the break of dawn with demons dancing like dervishes in thy head.
The release of the Horror of all Horrors, Defecus, from the bowel most twisted in the proceeding moments may satisfy your urge most strongly.
Failing that, read Paradise Lost and try praying to some of the bizarre names held therein.
So mote it be.