In Paris, queue-jumping liable to shock (6)
I believe the answer is:
risque
'liable to shock' is the definition.
(I've seen this in another clue)
'in paris queue-jumping' is the wordplay.
'in' says the answer is hidden in the clue.
'RISQUE' is hidden within 'paris queue jumping'.
(Other definitions for risque that I've seen before include "Bordering on the unseemly" , "Suggestive - naughty" , "Of a story, slightly indecent" , "Squire (anag.)" , "Quires (anag.)" .)