Ever read the lists of idioms in other languages — like the Russian expression На воре и шапка горит, which sort-of translates as "he has a visibly guilty conscience," but literally means "the thief ...
Your teen is “caught in 4K” — and boy, they’re in trouble. This is the definition of the slang expression, according to Dictionary.com: “Caught in 4k is a phrase that means someone was caught in the ...