"Ignoramos". In Spanish that's "we don't know".
Seriously, I suppose it's a good thing. That "look" is the outward manifestation of having made the weld rhythmically and precisely. In other words, you did things exactly the same way each time, progressing forward with a ball the same size each step. The reason I think this is a good thing is that there's an infernal amount of "frozen stress" ("when HELL FREEZES OVER!") in a completed weld. A weld that's the proper size and UNIFORMITY has that stress evenly distributed. "Harmonious stress" if you will.
In welding I've only had three epiphanies. The first one was, Damn, this is fun!
The second revelation, I published under the title "laying down the limp noodle". It documented the first time I ever laid down a perfect stringer bead with 7018. Oddly, although I was quite proud of the post, it brought a single response, by a single reader, who uttered a single word: "wow". For all I know, that's Swahili for DUNDERHEAD!
Whether I'm stick or gas welding, when I hit that groove it's immensely satisfying. The only thing that matches the joy is helping others hit it too.
The third revelation I had was this. A torch tip that's one size too big (hot) is better than one that's one size too small. But the thing is, as the metal starts to heat up you have to start dancing faster and faster. And of course, the best thing is "just right". But if you're fighting to get a puddle going hang it up and start over with a slightly bigger tip. "Oh dear, this porridge is tooo cold. Oh my, this porridge is tooo hot! YEAH, BABY! THIS PORRIDGE IS JUST RIGHT!!!!"
"That's my story and I'm stickin' to it".