I've never seen this before, Google showing a double URL in a single search result snippet. In fact, I was able to reproduce this by turning off safe search and trying the query multiple ways.
Here is a screen shot of the result for [cocaine mitch] showing the double URL. Sometimes it shows a single URL and sometimes it shows this double URL:
This was spotted by @dudesweet on Twitter.
Have you ever seen this before?
Pretty interesting.
Forum discussion at Twitter.