They're calling it "mutant lice." It is resistant to current over-the-counter medications. One grandma had enough when her daughter's boyfriend gave it to her grandkids.

This has made many parents increasingly paranoid and wary about their kids attracting lice.

One grandma in Florida contemplated killing the man who gave her grandkids lice.

It was her 33-year-old daughter's 22-year-old boyfriend (who was also, apparently, homeless).

But the man called the cops instead.

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