A state of mind
, usually the result of sleep deprivation
and/or a severe hangover
. In this state your train of thought
derails frequently, giving birth to strange associations and a surreal mode of speach.
The term "Pike Wake Turbulence", was coined in 1999 by a person who felt that reality was like "Feeling a pike swim by your leg in murky lake water: You're not even sure it was there."