What? Warren Buffett doesn’t wear underwear?

The 71-year-old Oracle of Omaha surprised a few shareholders and titillated others by revealing that underwear – at least for him – is better for investing than wearing.

At Buffett’s annual shareholder festival in Omaha for Berkshire Hathaway, someone asked if he wore boxers or briefs.

He answered, “When I wear underwear at all, which I rarely do . . . ” and left most of his adoring throngs guessing.

Experts say that going without bloomers, whether male or female, is primarily a choice made from the senses – ranging from a fashion sense of not wanting panty lines to show, to just the airy freedom of it all.

Buffett may be hotter than some thought.

Buffett, commenting on why he bought underwear giant Fruit of the Loom in a bankruptcy fire sale, said his right-hand man, Berkshire Hathaway Vice Chairman Charles Munger, gave him a good reason for the deal.

“Charlie for years has been telling me, ‘Warren, we have to get into women’s underwear,’ ” said Buffett. “Charlie is 78. It’s now or never.”

The annual meeting at a municipal arena, featuring picnics and baseball games, boosted a theme based on Buffett’s purchase of Fruit of the Loom.

The favorite T-shirt being hawked showed a photo of Buffett with the headline, “Warren Buffett. Our Top Banana.”

Costumed Fruit of the Loom characters from the company’s TV commercials also pranced around dressed as grapes and apples.

Some Fruit of the Loom executives at the shareholder festival vowed that Buffett would don a grape suit next year and run around the arena. But no one could say if it would be sans shorts.