Mastabatoom

• mastaba: a flat-roofed clay building used to mark a burial site in ancient Egypt; the forerunner of the pyramid
  • Wikipedia
  • Evolution of Egyptian Tombs

• toom: (adj.) empty; (v.t.) to empty → the empty tomb as a sign of Christ's resurrection

• toom: (n.) a rubbish tip → the kitchen midden, or rubbish tip, in HCE's backyard → see Dumb!

• masturbation

• Mastabatoom: onomatopoeic word representing the sound of Tim Finnegan's fall