You need to reduce your insulin for the cutting to really take effect. Intermittent fasting is a great idea to reduce insulin and increase your fat burning. Experiment with a few ways to improve your insulin sensitivity, and you should be able to get cut fairly easily.
Junk bulk, or more commonly called dirty bulking, is a way to consume a lot of junk food to quickly put on some weight. This is really unhealthy for you. Moreover, this weight is going to be much harder to cut as compared to the regular weight that you put on.