Two ambassadors causing outburst of amusement (2-2)
I believe the answer is:
he-he
'outburst of amusement' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'two ambassadors' is the wordplay.
'two ambassadors' can mean two replacements for 'ambassador'.
'ambassador' becomes 'HE' (His or Her Excellency).
'ambassador' becomes 'HE' (His or Her Excellency).
'he'+'he'='HE-HE'
'causing' is the link.
Can you help me to learn more?
(Other definitions for he-he that I've seen before include "Sound of laughter" , "Amused expression" .)