Definition of head-trip:
(n) :
(countable) The part of the body of an animal or human which contains the brain, mouth, and main sense organs.
(n) :
(people) To do with heads.
(n) :
Mental or emotional aptitude or skill.
(n) :
(figurative, metonymic) Mind; one's own thoughts.
(n) :
A headache; especially one resulting from intoxication.
(n) :
A headdress; a covering for the head.