I remember my first time using the quick fix. Right before getting it, I looked up some Team Fortress 2 memes, and say the one of soldier telling medic to grab his grenade, and saw that both got launched. I asked myself, "How does a medic, such as I, rocket jump along with my soldier?" So I got the item, and as any newcomer to Team Fortress 2 would, and didn't read the description. I started healing a soldier using the rocket jumper (don't ask me why) and as he rocket jumped, I saw my helpless character fall of the edge of a cliff, as I was playing pl_upward. At first, I facepalmed, but then I remembered the meme, and got a wide grin on my face, as I realized now that I could give people surprise bisectimies while on the fly! So, as fast as a 14 year old could, I spammed my friends ,estate box with "Equip your man treads, rocket jumper, and market gardener, 'cuz we're about to rain on some people's parade!"
After that, I would only use my quick fix and bonesaw, and market garden a heavy of soldier as a medic!
(once I landed on a soldier who was mid-rocket jumping, so I distracted him, as he unknowingly fell into a pit, as I safely jumped onto a platform. I believe his final words were "OMFG HACKING MEDIC!!! THAT WAS AN IMPOSSIBLE STUNT!!! HE'S USING AIMBOT OR SOME SHIT!!!"