"The Simpsons" outburst (3)
I believe the answer is:
doh
'the simpsons outburst' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for doh that I've seen before include "First and eighth note in tonic sol-fa" , "whoops!" , "The note C" , "First of the series at 17 Across" , "Homer Simpson's exasperated cry" .)