u/TheSpicyDutchman

I have had something in the back of my mind since I was a kid, I want a big and tall Tom and Jerry welt on the top of my head. You know, Tom hits his head and gets a giant pink bump on the top of his head. I know it's not appealing to most, but I always had this morbid curiosity about it. My only problem is that I have no idea how to get one. I've considered copying the cartoons and hitting myself in the head with a mallet, but a) I don't want to hurt myself and b) I doubt that it would ACTUALLY work, as cartoon logic famously differs from real life. Does anybody know how I can get a big welt on my head without hurting myself? Is there a specialist I can see or a safe DIY way? Any help would be appreciated, thank you.