Just another of the many techniques Herman Stranger is prone to using. His repertoire is endless. In this instance, he is melting the res inside the tube. Meaning when he goes to flush the tube out, as seen before in these posts, he can flush out much more res than before. Please also note the flame hasn't come out in the standard fashion, instead in some odd orb of light. Herman Stranger moves in mysterious ways, i mean WHO THE FUCK is Herman Stranger?