This comes allegedly from the much anticipated/much reviled (depending who you talk to) Sex & The City 2: The Wrath of Menopause.
It's Liza Minnelli singing Beyonce's "Single Ladies" (and saying "shit" a lot--it rhymes with "it").
That sound you heard is a bunch of heads in WeHo exploding.
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Via Vanity Fair>
Obsessive Compulsion Porn trailer for the movie: