Related:

• Sed quis custodiet ipsos Custodes? [Who guards the Guardians?]
• Quis custodiet ipsos custodes? (Who will watch the watchers?
  ) -- Juvenal (60-140 CE)...
• Who shall stand guard over the guards themselves? -- Juvenal
• Royal guards do it in uniforms.
• How many security guards at a Grateful Dead concert -- does it take to change a light bulb?
  21: One to change the bulb, the rest to fatally beat the Deadhead who was only there to look at the light....
• A good amulet may protect you against guards.
• Stalagmites: Miniature German prison guards. -- Spike Milliga
• Homer: Hey! Are you like one of those English guards who can't laugh or smile or anything?
  [makes noises and faces at him] [gets punched in the face] Ow!...
• A good bookshop is just a genteel Black Hole that knows how to read.
  -- Terry Pratchett, Guards! Guards!...