He earned nearly $3 million worth of karma.

Marine Cpl. Alexander Degenhardt offered to donate bone marrow to a stranger, although he was told “it’s kind of painful.’’

But, he thought, “What’s a little pain if it will save someone’s life?’’

Two days after he volunteered, he won $2.9 million at a Vegas casino.

“I look at this jackpot as kind of good karma for [the upcoming transplant],’’ he said.

***

Denny’s is not a do-it-yourself restaurant.

A man wearing a tie and carrying a briefcase showed up at a Denny’s in Madison, Wis., and announced he was the new manager.

Then he cooked himself a cheeseburger and ate it.

The real manager called headquarters, found out her “replacement’’ was a fraud and notified cops.

Maybe he’ll get a job in the jailhouse kitchen.

***

They caught him cold.

Cops in Deer Park, Texas, were fed up with food disappearing from their station-house refrigerator, so they set up a camera.

They quickly caught the culprit — one of their own.

He was charged with a misdemeanor and suspended for 30 days.

***

Two men from Salem, Mass., accused of stealing the head from an ice sculpture are likely to avoid time in the cooler — because the evidence melted.

Cops blame a faulty freezer.

The suspects’ lawyer said, “I’m sure this wasn’t done intentionally . . . But it doesn’t change the fact that my clients have a right to confront the evidence.’’

***

The symbol of the British people is a lion, but maybe it should be changed — to a teddy bear.

A new study by a hotel chain found that 35 percent of British adults sleep with stuffed toy bears, saying it helps ease their stress.

Adm. Nelson must be turning over in his grave.