Description I am the one who knocks
Does the grim and carefully groomed guy look familiar to you? Look again. Exactly, we have united our two favorite madmen. Now, one might think that the almost manically rule-following physicist and the severely criminal chemist have little in common, but consider: Megalomania. Makes life difficult for those around them. Often on the verge of being killed. Somewhere on the border between genius and madness. However, the most important commonality is the knocking. And it makes a crucial difference on which side you stand. Is someone knocking at your door, or are you the one who knocks?
For Walter and Sheldon, the answer is clear, I am the one who knocks. And preferably three times, anything else feels somehow...wrong. You should adopt this simple mantra, because who wants to be on the other side, either being killed or driven cruelly to despair?