The Absolutely Fantastic Adventure

Once upon a day...
I built a Lazer ray
That had to pay almost $5000 eh?
All the people were filled with dismay
I am a dangerous f{censored} all the way.
But on another day, far away
He had built an alpha ray
But he might as well throw it away
Because mine had a liquid crystal display.
Oh wait, this wasn't an adventure
Oh well, I would've bulit a photovoltaic cell.