Google seems to be testing clickable links within a search result description area. I am not sure if this is a bug or a feature but I was able to replicate this myself.
If you do a search for [trey copeland] and scroll down to the Twitter result, you may see the result below. The arrows I have in this image are referencing clickable links.
I tested this myself and those links are clickable.
Have you seen this before? Nice find @treycopeland!
Forum discussion at Twitter.