xkcd #3276: Recursive Trucker's Hitch
Title text:
As if the americium smoke detector incident wasn't enough, now nuclear regulators have ANOTHER reason to worry about the Boy Scouts.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3276/
The Explainxkcd for this lead me to the Wikipedia article for Block and tackle, which lead me to Block (sailing), whose first paragraph is giving me Plumbus vibes:
In sailing, a block is a single or multiple pulley. One or a number of sheaves are enclosed in an assembly between cheeks or chocks. In use, a block is fixed to the end of a line, to a spar, or to a surface. A line (rope) is reeved through the sheaves, and maybe through one or more matching blocks at some far end, to make up a tackle.