One afternoon, Shining Armor loved Cadence so much that he wanted to show her how strong he was to protect her.
Cadence: "Are you sure this is a good idea?"
Shining Armor: "Don't worry Cadence, you'll be fine. I'll throw you up and high! And you will soar like an eagle!"
"Wow, are you sure?"
"Yes, of course! Trust me!"
The two went to the balcony of the Crystal Empire Castle. Once there, Shining Armor carried Cadence and prepared to throw her.
Feeling anxious, Cadence shut her eyes and squealed in fear: "Ough!"
"Ready?"
"Yes…"
"In 3… 2… 1…"
Suddenly, Twilight came out from behind screaming: "Argh!"
Distracted at the same time, Shining Armor accidentally threw Cadence downwards, towards the ground (quite high) below. Shocked, he observed his wife as she tried to avoid the ground below. Unfortunately, she hit the ground with her left wing and got heavily wounded.
"NOOOO!!!" Screamed Shining Armor.
Curious to know what happened, Twilight quickly ran towards the balcony and looked down.
"Why did you scream Twilight!? Can't you see I was going to throw Cadence!?"
"Sorry Shining Armor… I… Rarity was chasing me to tickle me with her magic, but I don't want it!"
Sooner later, Rarity appeared from behind and saw Twilight with tears coming down from her eyes. In panic, she quickly got to her and said: "Oh, I'm so sorry darling. If you didn't like me to tickle you, just say so!"
"No Rarity… it's not about your tickling. Look down the balcony to see for yourself."
When Rarity looked down, she screamed: "Oh dear! Isn't that Cadence!?"
Twilight and Shining Armor nodded, feeling bitter about Rarity at the same time.
Eventually, Cadence lost her left wing and got it replaced with a prosthetic one at a local hospital in Ponyville, which made her stronger and able to fly further.
Moral of the story: Never throw your wife without locking your door. You never know when a distraction might just happen.