"Much of the country had to bundle up this week due to some unusually cold weather. Even in the deep South, residents struggled with temperatures in the low 20s."

"With the big chill comes the revival of an ominous phrase: 'the polar vortex.'"

"The sinister-sounding label has been hard to escape on TV news. The Today Show warned of the vortex in its promo spots. Some cautioned that the phenomenon might already put the squeeze on holiday shopping."

"Even The Tonight Show's Jimmy Fallon poked fun at the hype."