Metro

Cab gab sparks static

Errant sneezes. Narcoleptic cabmates. Impromptu karaoke sessions.

Sharing a taxi with total strangers could become a total nightmare for New Yorkers, many of whom are just looking for a cheaper — and quiet — ride to work.

As the shared-ride program was unveiled yesterday, an undercover Post reporter rode along with three Upper East Side women and gave them a taste of some of the uncouth behavior they could encounter when crammed in the back seat with fellow commuters.

Turning on the dreaded taxi TV was the first of countless annoying ways our reporter was able to disrupt the ride.

“This is a commercial!” rider Melissa Fego shouted before hitting the off switch.

Using an unsuspecting rider’s shoulder for a pillow also didn’t go over well.

“I’m tired!” our reporter declared, and plopped her head on the passenger.

The woman laughed uncomfortably, and then not-so-jokingly shrugged her off and didn’t speak a word for the rest of the ride.

Rider Helene Deutsch was asked to hold up a mirror as the reporter re-applied her lipstick.

Deutsch looked displeased when the reporter “borrowed” a tissue, blew her nose, and then tried to hand it back.

A little later, our reporter broke into song.

“Ch- ch- ch- ch- changes!” she belted out, harnessing her best David Bowie impression when someone asked to break a $100 bill.

“Um, I think it’s better to start the day quiet and relaxing,” Deutsch said.

By the end, the reporter confessed she wasn’t a normal rider at all — and asked if they would ever share a cab again.

“If it were like that every morning, it’d be too much to take,” Fego said. “People should be polite — and quiet.”