To walk quickly and with long strides, with a sense of authority and power, almost violently.
1. "Dude, the paintball game was dead until you stood up, turned on your flashlight, screamed "PUSSIES!", and started thunderwalking around the field unloading on everyone."
2. The Terminator (any of the movies will do)
3. Primary form of transportation for CHuck Norris, when he isn't riding his Magic Carpet, Giant Warpoodle.