City of bad low gags (7)
I believe the answer is:
glasgow
'city of bad low gags' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for glasgow that I've seen before include "European City of Culture, 1990" , "Where to find Sauchiehall Street" , "City of bad low gags" , "Scottish city on the Clyde" , "Scottish metropolis" .)