What's the Easiest Programming Language I Can Learn

Before you burn me at the stake, please hear me out. I'm a UX designer by trade; while not a developer, I do understand software and technology very well. I spend a lot of time testing and tinkering with ideas by trying to hack them together the best I can. My goal is to build a small but real feeling version of my idea to understand and test if there's actually value. I continually hit the wall or spend hours getting caught up on something trivial (I understand this is part of the learning process). Like for most people, time is an issue for me and I'm really looking for something to help me prototype quickly. I consider Ruby and Python too big for that (am I wrong)? What should I focus on, a Javascript framework, just jQuery, something like Haskell, etc.? Advice?