1: Pop your popcorn. I like to then either scoop or pour it out into a big bowl so I can get rid of the kernels and burned bits at the bottom. Popping my corn on the stove while microwaving the other ingredients cut my time down to a cool three minutes.
2: Melt your butter in a large bowl in the microwave (took me about 50 seconds). Add marshmallows, and microwave for two minutes, stirring after one. (three minutes!)
3: Fold popcorn into mixture and form into balls (ok, this can take a few extra minutes, but it's crazy fun, so who cares!) I got twenty two 2" balls from this. *tip: grease your hands well before forming popcorn balls, and be sure to get in between those fingers!