Communist comrades? They could make you laugh (4,8)
I believe the answer is:
marx brothers
'they could make you laugh' is the definition.
The definition suggests an adverb but the answer is not.
'communist comrades?' is the wordplay.
'communist' becomes 'marx' (I've seen this before).
'comrades?' becomes 'brothers' (I've seen this before).
'marx'+'brothers'='MARX BROTHERS'
Can you help me to learn more?
(Other definitions for marx brothers that I've seen before include "Film comedians" , "Groucho, Harpo, Chico, Zeppo and Gummo, but not Karl" , "Film family" .)