You could always hit yourself in the back of the head with the weighted fly or your hook point could bury into your blank and break your rod.

Don't even need to catch a tree limb on the backcast..the fly does not track the path of the rod tip, and the line. It tends to go low being heavier, and it drops down. You can whack your rod, and fracture it on either the back, or the fore casts, but more likely on the forecast. And you can bury it in yourself. If you don't do either of those, it can snap off at the tippet if the timing of the cast isn't just right...heavier tippets need to be used, IF it is a bigger hook, and more wt. fly. Lightly wt'd are no problem. The best casts to use are SLOOOOWER on the backcast,, and OPEN up the loop on the forward cast sending the fly HIGHER OVER YOUR HEAD. A great cast to learn and use for wt.'d flies, and any fly for that matter is the BELGIUM CAST. Also called the OVAL CAST. You cast off to your side, and lower on the back cast raising your hand/arm somewhat at the end of the backcast never coming to a stop, and then higher on the forecast sending the line and the wt.'d fly over the top tracking the top part of the oval. A sudden stop at the end of your backcast causes the wt.'d fly to jerk at the end, and usually drop down, and follow its own path, and not preferred to say the least. The Belgium cast seldom ever causes the leader/fly to run into the line, and end up with tangles.

Case account...When I first began steelheading with the fly rod, I was using a 10 foot sink tip with a big steelhead fly (big hook that has wt.) The breeze probably was not the best, and that usually is the cross breeze blowing towards your casting arm. I made an aggressive cast..hard stop on the backcast, and forward attempting to throw a tight loop, and splat, the fly hit me in the back of my jacket. It took me sometime to get the coat off because the fly had gone through the jacket, and embedded in my sweater. After getting set to cast again, I made the same type cast not knowing how to make an adjustment for the heavier sink tip that wants to do the same thing a wt.'d fly wants to do. I made the cast, and immediately knew the fly would produce the same results....so I ducked down, and left my rod hand up, above my head. SPLAT! the fly hit my hand like a bug on a wind shield. I stood up, and all I saw was the feathers...the hook was in my hand. I clipped off the leader, and headed home, called my local dentist who was a fly fisherman, and he said "meet me at the office" He numbed my hand, pushed the hook up through by flesh, clipped off the barb, and he pulled, and pulled getting that hook back out through my flesh...no fun, and a sore hand for sometime.

only use a weighted fly if you need to get deep. with a weighted fly you cant cast as goog or as far

one danger is if you want to fish a long tippet...no matter how you cast there is a good chance that when building line speed you catch yourself in the back and knock the wind out of yourself...yes it can happen i like counts list...but for number one i would substitute you can cast a heavy fly smack yourself in the back of the head...almost pass out...take 20 seconds then smack yourself in the back(knocking the wind out) so hard you almost pass out...then call it a day having only been out 5 minutes

Funny story... My wife and I are fishing out of a 12 ft. lake boat near Manson WA. not far from Chelan...Lake Antalon. I stood up, and she made a cast catching me in the ear. We cut the tippet knot, and kept on fishing. After awhile my wife said to me, "your ear is bleeding quite a bit." It didn't hurt because of the lack of nerves in the ear. We rowed towards shore, and there was a guy fishing on the bank. He yells, out, "catch anything?" I responded back, "Yeh, 3 brookies, and an ear," The guy yells, "What's an ear?" The guy had taken a first aid class, and was excited to get the hook out! He yanked it, and back out into the lake we went.

lol i was fishing a fly way to heavy for a long leader...lol sayfu yours is scarier you got hooked...my buddy did something similar to that but with a big weight in front of the fly...the fly landed on his had and dug just the point and then the weight hit and sank it in...his skin was too stretchy to push the point through so they yanked it out...had it on video it was HILARIOUS...

Too bad there isn't a blooper reel of all of these comments.