Jay Z Extra Careful Around Pregnant Beyonce

Jay Z made sure to extinguish his cigar and even slowed down the Ferris wheel  for his pregnant wife Beyonce while enjoying  his benefit carnival for The Shawn Carter Foundation on Manhattan's West Side.

Jay-Z doesn't just run this town. He runs a mean carnival, too.

The hip-hop mogul took over Pier 54 on Manhattan's West Side Thursday night and threw a lavish Coney Island-style soiree that raised a whopping $1.033 million for his Shawn Carter Foundation in just four hours.

Hova managed to have fun at his own party, too. After winning a pricey watch in a dart game, the rapper held hands with expectant wife Beyoncé as they took a romantic spin on a Ferris wheel.

The party was well underway when Beyoncé joined him at the pier party, which featured rides, sideshow attractions, games, lavish prizes and gourmet food that average carnies never taste.

Flanked by heavy security, the pregnant pop star - now both booty-ful and belly-licious - coaxed Jay onto the Ferris wheel.

One partygoer says that as the ride began its ascent, Beyoncé seemed to register a moment of concern, and her protective spouse instructed the wheel operator to "slow it down."

The source also noted that when Jay was with his wife and her precious cargo, the cigar in his mouth was unlit, presumably out of deference to her and a healthful pregnancy.

Earlier that night, Jay mingled with a crowd that included marketing guru Steve Stoute, NYPD Police Commissioner Ray Kelly, singer Estelle and Yankees Alex Rodriguez and CC Sabathia, even though their American League Division Series opener was the following day.

The Bombers left well before the party ended around midnight, and although Sabathia spent much of the evening hanging near the Drown the Clown pitching game, his will power won out.

At one point, the attraction's belligerent bozo dared the Yankee hurler to to knock him into the dunk tank, barking, "Come on, CC. Don't be a wimp." But Sabathia told us manager Joe Girardi "would kill me" if he was caught risking his pitching arm.

Meanwhile, Jay showed he hadn't lost his midway skills from youthful days on Coney Island.

With lit cigar in hand, the southpaw went 3 for 3 at the dart game and won a $20,000 Hublot watch that he promptly gave to a friend.

The rapper capped off the night by joining his mother, Gloria Carter, to raffle off a new Chrysler 300.

"If you're going to donate to a worthy cause, there should be some fun around it," Jay-Z told us at the beginning of the carnival. But, he added, "I'm sure we'll throw a stuffy dinner one time, too."

Jacked from NY Daily News