Why there's a hole in my brother's wall.....

Ok, so you know that everybody gets their wisdom teeth out, sooner or later. Well, a couple of years ago, my brother had to get his taken out, and unfortunately, his luck turned on him.  After he had the teeth pulled out, he got something called a dry socket.  Now, I don't really know what that is... but it happens when you suck on a straw... or...... I'm not really educated in that field...... Well, anyways, it hurts WAY bad, and one night, when he was sleeping, the pain woke him up, and he punched a fist size hole into his wall.  

Hopefully, this thingy isn't genetic. (I doubt it) But I certainly hope I don't get into THAT much pain... I can't even imagine....