Does this happen to you, when you go #2?

So, every time I go #2, my nose always gets runny. It doesn’t matter what time of year it is, or whether or not I have a cold. It literally won’t stop running. I have to wipe and blow my nose sometimes twice while going #2.

While going #2, I lean over, at approximately a 45 degree angle, with my elbows on my knees. Sometimes, I browse on my phone, or play scrabble, but I’m usually always at the same angle.

I’ve asked a couple people before if it happens to them as well. And so far, I haven’t met anyone who had the same thing happen to them. What causes this?