Charlie’s speech is a reference to Gurren Lagann, usually I mention this kinda stuff in the alt text and DA repost only, but the scene has been translated so many ways that I wanted to be absolutely sure it got through.  My favorite version of that speech is as follows:

“I’ll dig a hole that pierces the heavens!  Even If that hole becomes my grave!  As long as I break through I’ll be victorious!”

Much of the sentiment and symbolism has been turned on it’s head here.  And that’s a fact with significance.

On an unrelated note I made another one of my pony videos