I may tune out boxing ring – whatever! (3,4,2)
I believe the answer is:
you name it
'whatever' is the definition.
(I've seen this before)
'i may tune out boxing ring' is the wordplay.
I cannot really see how this works, but
'i' could be 'me' and 'me' is present in the answer.
'ring' could be 'o' (letter resembling a ring) and 'o' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for you name it that I've seen before include "vicar may be asked at baptism" , "whatever you want" , "no matter what" , "whatever's needed" , "It's your eponym" .)