When someone has the tag of their shirt ect. showing over the collar of it, they are referred to as a tag dag. The actual tag as referred to as a taggy daggy. If you see some one with a taggy daggy, it is entirely appropriate to stick your hand down the back of their shirt to to fix it.
Jacob: Why are you sticking you hand down my shirt!?!?
A smalltwisted piece of toilet paper, usually discovered hours later on the bathroom floor, that has obviously been used and should have been flushed, but wasn't.
My girlfriend found this dag tag on the toilet floor, and I was so embarrassed.
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.