Empty beer over uniform then laugh, creating commotion (8)
I believe the answer is:
brouhaha
'commotion' is the definition.
(I've seen this before)
'empty beer over uniform then laugh' is the wordplay.
'empty beer over' becomes 'bro' (I can't explain this - if you can you should give a lot more credence to this answer).
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'then' says to put letters next to each other.
'laugh' becomes 'haha' (ha-ha is a laughing sound).
'bro'+'u'+'haha'='BROUHAHA'
'creating' acts as a link.
Can you help me to learn more?
(Other definitions for brouhaha that I've seen before include "Noisy and critical response" , "Sensation" , "Noisy and overexcited reaction to something" , "Noisy fuss" , "rumpus" .)