
Also known as backscratchers, scratch-back, back scratcher
thumb|250px|A common wooden backscratcher thumb|250px|Distinct styles of backscratchers in action, employing different itch-relieving techniques. A backscratcher, sometimes known as a scratch-back, is a hand tool used for scratching the skin in order to relieve an itch in areas that cannot easily be reached just by one's own hands, typically the back. Although the backscratcher was an early human invention, other primates have been observed using similar tools.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).