… compiler wears this bowler out? Oh, please! (2,3)
I believe the answer is:
my hat
'oh please' is the definition.
(expression of disbelief)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for my hat that I've seen before include "Exclamation of surprise" , "Old-fashioned exclamation" , "Out of respect I might remove this" , "nonsense" , "I refuse to believe" .)