Body lice or head lice, especially when a child is said to have cooties; used informally or playfully to refer to germs or disease.
From Malay 'kutu' (louse), adopted by British soldiers during colonial service in Asia and brought into English around 1890. The word became especially popular in American children's culture as a playful term.
Cooties entered English through soldiers in Asia, then became a playground epidemic in American childhood—somehow 'you have cooties' became a ritual insult between boys and girls, turning a real parasitic louse into the most adorable childhood taboo.
Playground term historically weaponized in gender segregation—boys and girls labeled each other's bodies as 'contaminated' to enforce separation and reinforce gender hierarchy.
Avoid in contexts discussing health, bodies, or gender relations; use 'germs' or 'infection' instead. In historical or sociological contexts, acknowledge its role in childhood gender policing.
["germs","infection","pathogens"]
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