Veteran Iowa Sen. Chuck Grassley poked fun at his fellow pols Friday — suggesting that the cold snap chilling the northern US might keep them honest.

“It’s so cold in the upper half of the USA Today that politicians will put their hands in their own pockets,” the 84-year-old Republican wrote on Twitter.

The usually dour Grassley, a millionaire who is chairman of the Senate Judiciary Committee, last made headlines when he called for eliminating the estate tax — suggesting that people who don’t accumulate great wealth are blowing their dough on “booze” and “women.”

“I think not having the estate tax recognizes the people that are investing, as opposed to those that are just spending every darn penny they have, whether it’s on booze or women or movies,” the farmer-turned-lawmaker said earlier this month.