This one time I didn't watch where I was going and I nearly got run over by a car, but I slipped due to icy roads, which ended up saving my life. No idea if that would have killed me but like 5 entire classes (150 people or so) were watching so I guess nearly dying of embarrassment also counts.
This other time I was at a swimming pool and some douche didn't wait a few seconds until I went down the slide, so I got down, turned around and as I was inhaling through my mouth, this other guy landed in the water which caused me to inhale water. I had to cough a lot and once again, I have no idea if it would have killed me but I was pretty scared and panicking like crazy. Dude didn't even apologize and went back to his douchebag friends, still need to place a hit on him btw.