Erm, I don't know
Really, for your first original flash, it was pretty poorly executed. I honestly didn't laugh once throughout the whole movie, and the animation was pretty sloppy. I'm not sure if you wanted to make it look that way or you had a short amount of time, but it seemed like there was no structure to the characters whatsoever. In regards to the humor, I could feel myself predicting some of the jokes from a mile away, and even the ending was easy to figure out before it happened. Plus, what's with the background? They can't just be sitting in the middle of a dark abyss. If they're in a basement, draw in basement walls to add more atmosphere.
Part of making a functional animation in my opinion is to have every aspect neatly put into place and cooperating together, and to me personally, it was all loosely tied with little to no sense of focus. I hate coming across as harsh about this subject, especially when I myself have yet to make animation myself, but for someone who wants to become a professional animator, it hopefully won't be bad to take in constructive criticism.