cooty

Slang adjective describing someone or something infested with cooties — body lice or, in the playground sense, an imaginary contagious uncoolness. To call something or someone cooty is to mark it as grubby, undesirable, or socially contaminated. The term echoes generations of childhood games where 'cooties' were a mock disease you could catch from touching the wrong person. In adult usage it retains that tone of theatrical disgust, though always with a nudge-and-wink awareness that it's fundamentally silly.