Back in the 80s a kid called Scott,
Invented a thing called 'The Skateboard Pot',
No longer, he claimed, would he require a loo,
If - while skating - he needed to poo.
But ever intent on ways to refine,
A gas-powered version was his next design,
"It's a Hoverpot.", he declared with pride,
"Can we have a go?" his friends all cried.
"Of course." he said, "But you need to know...
... it's powered by farts that YOU have to blow.
So eat dates & figs for swift advance,
...but crucially first remove your pants..."
Yipeeeee Brrr-Zoooooooom.... (swipe for powered hoverpot)

Acknowledgment: the site author cannot claim merit for The Hoverpot since the idea is from a contributor who prefers to remain anonymous (perhaps for good reason?)