I note that I, and 14 guests are reading this thread. I expect the guests are shaking their heads, as I did, when I first read it. Human tissue is being destroyed in the sinus cavity by doing this. Do this over and over and end up in the emergency room with bleeding coming out the nose and blood staying in the sinus to cause infection from the condom passing through it.
Parents are told to watch in case their kid does this. They should right now tell their kid what could happen and also tell the kid, "You are grounded for the rest of your life if you do this! And, you will never get to drive a car!"