DO A BUNK, 1. an English slang term which meant “run away or desert.” (7204C07 SO III) 2. the body goes collapse; the heart is still beating, the lungs are still breathing, because the G.E. runs those, but the thetan–he’s done a bunk. (PDC 9) 3. that’s what we say colloquially, means on his way over the hills and far away and he’s just now passing Galaxy 18. (PDC 46) 4. the person shoots out of his head and he’s on his way. He hit the dispersal just adjacent to a ridge. (PDC 23)
Hubbard, L. R., (1975) Dianetics and Scientology Technical Dictionary. Los Angeles: Church of Scientology of California Publications Organization.