SWEET LORD IT'S AN ANIMATION or OH GOD IT'S AN ANIMATION is a recurring joke on Edd's Deviantart page when Edd submits a flash\episode to his page he puts that under those names. It is usally seen as a animated the preview image for his work. 
There are currently two thus far. SWEET LORD ITS AN ANIMATION is seen for his Hammer and Fail animation, and OH GOD IT'S AN ANIMATION for WTFuture.
- The images flash red or white. 
- In the WTF Future gif it can be static like an old TV.