Usually used as a compliment for somebody with really admirable kicks. Can also be used as a sarcastic derogatory term towards somebody with really beat up kicks insisting that they are fresh.
Boyle: Check out these 12s.
Charles: Kicks city bro!
Lussac: *with beat up sneakers, attempts to show off his swagger* I love my kicks.
Frank: Pfft, yeah, kiiiicks ciiiity bro!