It was a naked attempt to shock viewers

Imagine the surprise of thousands of Comcast subscribers in Tucson watching Super Bowl Sunday and seeing it interrupted by pornographic content.

The company said it was an “isolated malicious act,” the Arizona Daily Star reported. The U.S. Attorney’s office in Phoenix said it was looking into the interruption, which lasted about 30 seconds and featured full male nudity.

It’s unclear how many viewers saw the clip from a porn movie being shown on a pay-per-view adult cable channel offered by Comcast.

The Daily Star reported that it was flooded with calls Sunday night from irate viewers who said the porn cut into the game with less than three minutes to play, just after wide receiver Larry Fitzgerald scored to put the Arizona Cardinals in the lead.

Extreme sport?

Here’s a sport where you have to be tough.

A broken neck, a dozen broken or dislocated bones and 600 people struck down with hypothermia -- including the winner -- meant it was business as usual in what has been dubbed the world’s toughest endurance battle, the Tough Guy challenge in England in sub-zero temperatures.

There were about 6,000 competitors in a challenge that wasn’t without controversy, with eventual winner James Appleton overtaken in the last 100 yards by a competitor later disqualified for taking a short cut.

The event -- near Wolverhampton, England -- now in its 24th year, offered the chance to crawl through barbed wire, vault over burning tires and swing through manure-filled mud.

Trivia time

Which teams have lost in the Super Bowl and won the championship the next season?

Nice call

President Obama was rooting for Pittsburgh, but that didn’t stop him from making a congratulatory call to Arizona Coach Ken Whisenhunt. Obama made the call a day after the Cardinals were beaten by the Steelers in the Super Bowl.

Whisenhunt said the call came after he returned to his home Monday afternoon. “He called my cellphone. I don’t know how they got my number,” Whisenhunt said. “I was humbled and I was stunned.”

Trivia answer

Dallas lost to the Baltimore Colts in 1971, but in 1972 the Cowboys beat Miami to win the Super Bowl. And the Dolphins came back to win the Super Bowl over the Washington Redskins in 1973.

And finally

Shawn Sedonis, 40, and his son, Garrett, 8, arrived about 8:30 a.m. for the Steelers victory parade. Garrett held a cardboard sign saying, “Sorry Teach, I Have Sixburgh Fever” -- to explain his absence from elementary school.

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broderick.turner@latimes.com