17 across
Not
some
other
viewer’s
rubbish
(2,3)
Not some other viewer’s rubbish (2,3)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at rubbish — that's your definition, since "my eye!" is a exclamation meaning nonsense or disbelief. For the wordplay, it's built in two parts: not some other gets you MY (as in belonging to me, not someone else), and viewer gives you EYE.