This is an idea literally conceived moments ago when I attempted to "figure out" if a particular site had an existing !bang I could use.

For example, I wanted to come up with a cool word to describe a meaning but wasn't quite sure what that word may be. The best site for this kind of thing is Stack Exchange English. 

So naturally, being a DDG user I wanted to find out if there was a !bang for english.stackexchange.com
I know the common !bangs "!sx " for the main StackExchange and "!so" for StackOverflow but I have never cared to find out /remember / memorize any !bangs for the other StackExchange sites such as "English" and "Astronomy" etc.

Anyway, the idea is this - there should be a way I can query DDG with something like "!bang english.stackexchange.com" to A) check if a !bang exists for it and if it does B)  tell me the specific !bang command. 

Of course, this info should generate in a nice little zero click box :)

This would be faster than the only other way I know, which would be to goto the main !bangs list and CTRL-F for the name of the given site you want to check for.