Spill hot coffee on (5)
I believe the answer is:
scald
'spill hot coffee on' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for scald that I've seen before include "Burn with water" , "Hurt with hot water" , "Heat (milk) to near boiling point" , "Injure with hot liquid" , "Injure with steam" .)