Silly jokes about parking in capital city (6)
I believe the answer is:
skopje
'capital city' is the definition.
(I've seen this before)
'silly jokes about parking' is the wordplay.
'silly' indicates anagramming the letters.
'about' indicates putting letters inside.
'parking' becomes 'p'.
'jokes' with letters rearranged gives 'skoje'.
'skoje' placed around 'p' is 'SKOPJE'.
'in' is the link.
(Other definitions for skopje that I've seen before include "Macedonia's capital" , "place in Balkans" , "capital city" , "foreign capital" , "Capital of FYR Macedonia" .)