My Little Pony: Friendship is Magic - Team Fortress 2

And that's how Equestria lost its medical license.

@Uploaders
You guys should really provide sources for some of these stuff when you already know where it originally came from.
You just have to click "Edit Photo" and put the source/s under "Notes".
Posting it on the comment section will also do.

@Majora’s Mare
Anyway “here”:http://tinyurl.com/5wq9xeh is the source. (the textile format isn't working for some reason)
Also here is the animation only version.

@Yetii
That's because Frankie was based on Lauren.
It’s a subtle reference by CR (the guy who made this).