Toilet seat up or down? The solution might be mechanical engineering

This Sloped Toilet Is Meant To Increase Workplace Productivity

What happens if you flush while seated on the toilet on an airplane? - Quora

Engineers create a toilet bowl coating so slippery that 'human waste can't stick to it

Gerber Avalanche 2-Piece 1.28 GPF Single Flush Elongated Toilet in White with Slow Close Seat GWS31812S - The Home Depot

Estate™ Touchless Skirted Two-Piece 1.28 gpf/4.8 Lpf Chair Height Elongated Toilet With Seat

Teflon John: Scientists may have finally eliminated skid marks in toilets - Study Finds

Sanigrind Pro – The best solution to install a full bathroom using a conventional toilet

Should you leave your toilet seat up or down?

Common Macerator Toilet Problems How to Fix Problems with Macerator Toilets