Flower Nail

What is this thing? How could this possibly be useful?
"You want a chocolate cake with roses made out of frosting? Sure! I'll pull up a youtube video the night before your party with all of your friends at the trampoline park and will decorate the bejesus out of that cake."
"Thanks Daddy!"
So begins my tale.
The night: dark
The mood: tense.
My blood sugar: about to get higher.
So there I was, just having baked the cake, frosted it, and set aside a whole pound of frosting to make buttercream roses. How you ask? Well, you're slightly ahead of where I was at that point in time.
"Alexa. Show me a video of how to make buttercream roses."
"Sure."
As I watched videos taking most of the time to detail their life stories and explaining the merits of making cakes, they all center around having these things called "Flower nails" so that you can rotate the rose as you are squirting out your favorite concoction of fat and sugar. Realizing I had nothing of the sort, did I stop? Did I g