Sideræl (from Norwegian "side" (side) and "ræl" (scrap, something of low quality). It could be anything of low quality laying on the side, usually worthless.
In 2022, Elon Musk and Grimes named their son "Exa Dark Sideræl". An unfortunate choice since this is not a positive word.
An especially large turd that circles the bowl a few times, leaving skid marks before it flushes. Especially common these days due to low-flush toilets.
Raisa was tired of scrubbing the bowl every time her husband Igor took a dump. He left enormous bowl skidders every time, and it took quite a bit of Comet cleanser and a good brush to remove their presense, and what with all the other things Raisa had to do, shave the cat, fry the beetroots and launder all the spacesuits, she was tired of this unnecessary cleaning.