Hey, fellers! Learn Ju-Jitsu! Tear a bully’s arm off! Freeze your face in a terrifying Joker rictus grin!

This 1940s advertisement takes the more modern self-defense course promos and puts in somewhat unique elements, chiefly THE SCARIEST KID IN THE HISTORY OF COMICS. If you see that face, run the other way — there’s your self-defense. (And I, for one, would not want to see Jimmy “Lick Big Butch.” It sounds like prison sodomy.)

So Lighting Ju-Jitsu gives you the strength and leverage manipulation to slam a bully around like She-Hulk pummeling the Man-Elephant. Huh. Good to know, but we in the 21st century prefer to savagely powerbomb our bullies into oblivion, thank you very much.