i still have them, admittedly i used to get them LOADS when i was kid less so now, but i can guarantee if something gets up my nose or i'm ill or something if i sneeze three times = nosebleed. its worse when i'm ill and my nse is blocked coz i'll sneeze or blow my nose, and its not until my nose clear up that i discover the bloodclot amongst the phlegm or then a nosebleed starts. but i get tehm well randomly usually at times of immense stress/pressure and a lot of the time after funerals.
my special trick tho, is if i'm having a major nosebleed and im pinching my nose to stem the flow, the blood will redivert and come out my eyes, people get sooooo scared!
try this test close your mouth, pinch ure nose now breathe out, for like everyone else the air seems to be forcing itself out their ears or not at all, whereas for me its my eyes, so thats where the blood goes.
Crying blood is the mose awesome thing in the world, especially in the middle of town whn you get a random nosebleed and the blood jsut comes out ure eye, people are freaked!