Admit it. When the weather's cold outside and you're home alone, you've had a few daydreams about MILFs. Imagining a MILF's warm embrace, your worries drift away, and your mind falls into the realm of pure pleasure. You whisper softly to yourself, "That's what I need: 'Many Islands, Low Fares.' I love MILFs."

That's how Spirit Airlines purportedly envisioned its recent promotion. Looking to tout ridiculously cheap fares to the Bahamas, the off-brand airline trumpeted the "M.I.L.F." deal on its ...