Consider this post the Fandom equivalent of the Rosetta Stone. Let's begin.
Feels: Feels is a shorted version of the word "Feeling." Feels are what you feel, in the deep down dark shadowy corners and recesses of your heart of hearts. The ache when someone dies or cries or lies. An intense emotional response, such as sadness, excitement, or awe. When your favorite characters make a bad choice. Or basically anything written by Moffat.
GIF: Graphics Interchange Format. Little moving picture-y things, to illustrate feelings, thoughts and general Fangirling or Fanboying.
|Pinkie can't capitalize.|