

That night Bruce finds his father dead in his lab, and the serum missing. A young Bruce Wayne is thrilled when Superboy arrives and asks for the serum, anticipating an attack from Lex Luthor, but Wayne says he hasn't done enough testing and Superboy, frustrated, flies off. Thomas Wayne is still alive in this tale and has just created a cure for Green Kryptonite. The story is one of DC's "Imaginary Novels," basically a "What If?." story that finds Batman and Superman as mortal enemies.

The image is ripped from the pages of World's Finest Comics #153, released in 1965. But why did Batman slap Robin and where did this panel come from in the first place?

Any denizen of the internet has almost undoubtedly come across the seemingly ubiquitous meme of Batman slapping Robin, which usually comes with humorous word bubbles explaining the reason The Caped Crusader is assaulting The Boy Wonder.
