Wake up in cooler (4)
I believe the answer is:
stir
I believe this clue is a double definition.
'wake up' is the first definition.
(thesaurus)
'cooler' is the second definition.
(both are slang terms for prison)
'in' is the link.
(Other definitions for stir that I've seen before include "Sensation" , "Commotion - prison" , "Whisk, agitate" , "College" , "Bustle, activity" .)