Unconventional, like picture removed from art gallery? (3-3-4)
I believe the answer is:
off-the-wall
'unconventional' is the definition.
(I've seen this before)
'picture removed from art gallery?' is the wordplay.
I cannot quite understand how this works, but
'removed' could be 'off' (as in an item of clothing taken off) and 'off' is found in the answer.
The remaining letters 'thewall' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'like' is the link.
Can you help me to learn more?
(Other definitions for off-the-wall that I've seen before include "Conspicuously or grossly unconventional" , "like a newly escaped convict?" , "Original" .)