1.) a word used when you don't know what a thing is.
2.) a random object.
3.) a funny word to call somebody who is being weird.
1.) Mom-"Jeffy, hand me the key."
Jeffy-"Where is the damn key???"
Mom-"Over there, you know, by the dumaflache!"
Jeffy-"What the hell is a dumaflache?!?!?!?"
2.)"I found a dumaflache in the woods. Looks old. Don't quite know what the hell it does..."
3.) (your friend walks into you house, sits down in a chair, leans back, and falls out, tumbling across the room)
"Dude, your such a dumaflache!"
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.