Hah. I'm mexico-tastic. Anyhoo. I finished my project. It's cool. We have to do a Rube Goldberg thing, so I'm popping balloons. Step 1: Drop a ball. Step 2: It will go down the track and into the cup. Step 3: The cup is on a pulley, with a rod thing on the other end. The cup will become heavier than the rod and lift it up. Step 4: This releases a wheel thing with an axel that goes down a track. On the axel is a safety pin that pops a balloon. YAAAAY!