It's a scene called Bozo (Bozozochu I think its real name) its a mad customising thing vaguely based on some 70's race cars style that taken to the extreme.
There are some hideous things & some quite cool ones too. The exhaust style has made its way all over now & you'll see upturned pointy up things everywhere, also those dangly things you see on the back of JDM cars came from that.
Each to their own, at least not every drives round in boring Corolla's