What a trip!
I believe the answer is:
odyssey
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">what a trip</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for odyssey that I've seen before include "Greek epic on the wanderings of Ulysses" , "Long, eventful, wandering journey" , "Homer's epic poem" , "Gruelling journey as by Homer" , "Homer's epic poen about great journey" .)