truth be told, I dont think there is much you can do about it actually... other than A) don't blow your nose and B) Lie down on your back and lift your head up for a few minutes.
Gosh, I can remember lying on the floor of the girls bathroom at school with mountains of bloody toilet paper surrounding me hahahaha!
oh no .... i hope my boys will grow out of it
From my experience, most do - so I would not worry abut it too much xxx