TIFU by stabbing my brother

By today, I mean several years ago.

My brother, his wife and I were enjoying a nice meal of tomato sauce with shrimp on spaghetti. I was sitting on the couch and he was sitting on the floor.

My SIL had cooked the shrimp to perfection. I love shrimp. My brother knows this, but he decided to jab his fork into one of my lovely shrimp. That's cool. That's fine.

I jokingly told him, "If you take another one of my shrimp, I'll stab you with my fork." He, rightfully, didn't believe me, so he skewered and ate another one of my juicy shrimp. I swing my fork, aiming for his forearm.

Because I'm not a psycho, I pull up short.

Because he has reflexes, he throws his arm up to protect himself from the fork-wielding psycho.

Fork meets forearm and it feels gross.

In shock and disgust, I release the fork. So now we have essentially switched roles. He is the fork-wielding psycho(Kinda. The fork is sticking out of his arm) and I'm the one with reflexes, cringing away from his inevitable counter strike.

With a mighty bellow, he pulls the fork from his arm and launches it across the room. Thank Zeus!

He needed antibiotics, which I paid for.

TL;DR: My brother threw his arm into the path of my fast-moving fork.