DOPE-OFF
  1. the phenomenon of a person getting tired, sleepy, foggy (as though doped ). One of the phenomena of going past a misunderstood word. (BTB 12 Apr 72)
  2. a state of lessened awareness, still above unconsciousness, and manifested principally by communication lag. Dope-off is also caused by impaired havingness. (COHA Gloss)


Technical Dictionary