" Murder was in fact a fairly uncommon event in Ankh-Morpork, but there were a lot of suicides. Walking in the night-time alleyways of The Shades was suicide. Asking for a short in a dwarf bar was suicide. Saying 'Got rocks in your head?' to a troll was suicide. You could commit suicide very easily, if you weren't careful. "

― Terry Pratchett , Men at Arms (Discworld, #15; City Watch #2)