Shining Armor really likes to drink coffee, a lot. He needs it especially now as he has his finals to study for. A young Twilight wants to know why he, their parents, and Cadance, her foalsitter, like coffee so much. When Cadance calls and comes over to their place for a dinner date, Twilight finds out why it is good for them and later why not good for fillies like her.
*EDIT* Forgot to mention this earlier. The artwork is from dm29 on Deviant Art and can be found here...
*EDIT 2* Co-Authored with Prince-Nightfire93