Related:

• exercise, left as an adj. [from technical books] Used to complete a proof when one doesn't mind a handwave, or to avoid one entirely.
  The complete phrase is: "The proof [or `the rest'] is left as an exercise for the reader....
• Proof left as an exercise for your supervisor.
• glitch: /glich/ [from German `glitschen' to slip, via Yiddish `glitshen', to slide or skid] 1.
  . A sudden interruption in electric service, sanity, continuity, or program function....
• The solution of this problem is trivial and is left as an exercise for the reader.
• NP- /N-P/ pref. Extremely. Used to modify adjectives describing a level or quality of difficulty
  he connotation is often `more so than it should be' This is generalized from the computer-science terms `NP-hard' and `NP-complete'...
• The exercise is proof of the student.
• NP-: /N-P/ pref. Extremely. Used to modify adjectives describing a level or quality of difficulty
  he connotation is often `more so than it should be' (NP-complete problems all seem to be very hard, but so far no one has found a good a priori reason that they should be....
• Feminizts are proof that God has a sense of humor.
• QOTD: "This is a one line proof... if we start sufficiently far to the left.