Image imported from derpibooru
Original Description:

While Luna travels around Equestria to walk around and discovers things, a slithery cobra snake pops up right before here. Now you would think one would immediately run away, but instead Luna stays and observes this unknown creature right before her. Before she could come up with a thought, the snake’s tail quickly starts to wrap around the princess leaving her in a confused state. The tail wraps around her belly, then to her chest, and finally reaches to her neck and gives Luna a big squeeze, startling her. Poor Luna wanted to do anything to get out of this situation, but the coils keep tightening and squeezing her more to the point of her about to run out of breath. As the Cobra watches in glee to see its prized possession try to struggle for freedom.