User blog comment:JapaneseOPfan/buggy wonders/@comment-1595565-20110119040045

I think what that meant was move freely. Here's how I see what happened in volume 3. Luffy punches Buggy. Buggy detaches his head to minimize the impact. However, he underestimated the power of Luffy's punch. After his head got x distance away from his body, the laws of physics took over and sent him flying the rest of the way. Buggy's powers have been some of the most inconsistently ruled of all the Devil Fruits. It was also said that Buggy's feet had to remain planted on the ground when he separated himself. Yet, he was seen running at Marineford while split at the waist.