Writing Prompt Generator story #4

Once when I wanted to try something new, to go beyond the safety of my favorite story subjects, I used a Writing Prompt Generator to give me a first sentence. Sure, it was harder to write a story that way, but it also made me write and learn, and in the end I loved it!

For this swap you will write a story starting with the following sentence:

"That was when I invented it."

I got this from the generator at Adam Maxwell's Fiction Lounge.

Your story can be about anything and everything, as long as the prompt is your first sentence! Fiction and non-fiction, everything is okay! Please try to make your story at least 500 words, explore the prompt!

You may be rated down if your story doesn't have the prompt as the first sentence.

So once again.... an at least 500 words long story with this as the first sentence:

"That was when I invented it"