Characters facing embarrassment always tease and scoff (3)
I believe the answer is:
eat
'scoff' is the definition.
(to scoff something is to eat it quickly)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for eat that I've seen before include "Take food" , "and 27: Be humiliated" , "Munch" , "tolerate in diet" , "Feed" .)