Are their any reliable accounts (or hell, even unreliable accounts) of someone catching sight of a tit and immediately keeling over, be it be from shock or getting covered with a mixture of breast milk and cream (a la Woody Allen’s Everything You Ever Wanted to Know About Sex But Were Afraid to Ask? Heck, I’ll even take someone being impaled on a set of frozen ta-ta’s, or a tit falling off a statue and crushing someone.
Best link text ever.
Way to go man, way to go 
Sadly, however, that doesn’t count.
Does so.
I assume Mr. Greene has posthumously received his Darwin Award.
I recall several (maybe 10-15) years ago a large breasted stripper getting sued by a lap dance recipient: He claimed he received a neck injury from the weight of her breasts on his head.
I meant “unreliable” in the sense that it couldn’t be verified. If it’s in the WWN, it can be verified to be false. 
If you happen to be a character in an anime series, it could give you a nosebleed.
I’m not all there in the boob department, but I was kerb crawled by a guy (a butt guy) I kept indicating that he should look ahead, but he couldn’t stop looking at me - until … he crashed into someones brand new (parked) motorbike! It just so happened that the motorbike owner was hosting a party of about 200 people on the basketball court … he tried to produce my butt as evidence that he hadn’t intentionally crashed the bike! Everyone including the bike owner luckily found it to be roll on the ground funny.
Cite! I demand a cite!
from motomoon’s link:
There was once a chap called Grit
Who was felled by a falling tit
Said he with a grin as he wiped off his chin
I didn’t know I was going to win! 
On her Blond Ambition tour, Madonna put out the eyes of no fewer than 17 fans with those pointy bras.
I would just like to add for the record that there’s a stripper that actually goes by the name “Letha Weapons”. And no, you don’t want to know how I can vouch for that knowledge.
Tripler
Just move along people. Move along.
Nearest I can cite is a fictional example. It was a one-panel cartoon many years ago in, IIRC, Hustler magazine. It showed a mountain road with a sharp dropoff on one side, and on the other a billboard of a scantily clad large-breasted woman. The road curved sharply at that point, and we see a set of skid marks leading to a hole in the guard rail where someone failed to make the turn.
Our own poster lee was almost suffocated by her own breasts.