
Jamie N. answered 08/11/19
Grammar was emphasized in my college courses
Hi!
This was quite a descriptive article! "Bansky" is apparently the name of an artist mentioned in the article. When someone says something or someone is "your bag", they mean that it's something you are really interested in, prefer, or enjoy. So when the writer of the article says "If Bansky's your bag, continue fervoring", they are saying that if you really like Bansky or his work, then continue fervoring. If you do not prefer Bansky, then he's not "your bag."
Idioms can be tricky and there are a lot out there! What often helps people is to use a search engine like Google to look up the meaning and origin of the idiom. You may want to try that with this idiom...you may find that understanding its origin will help you better visualize the text and remember the meaning! And if you need further assistance, don't hesitate to ask : )