Metro

Grammar stickler: Starbucks booted me

Starbucks’ strange vernacular finally drove a customer nuts.

Lynne Rosenthal, a college English professor from Manhattan, said three cops forcibly ejected her from an Upper West Side Starbucks yesterday morning after she got into a dispute with a counterperson — make that barista — for refusing to place her order by the coffee chain’s rules.

Rosenthal, who is in her early 60s, asked for a toasted multigrain bagel — and became enraged when the barista at the franchise, on Columbus Avenue at 86th Street, followed up by inquiring, “Do you want butter or cheese?”

“I just wanted a multigrain bagel,” Rosenthal told The Post. “I refused to say ‘without butter or cheese.’ When you go to Burger King, you don’t have to list the six things you don’t want.

“Linguistically, it’s stupid, and I’m a stickler for correct English.”

Rosenthal admitted she had run into trouble before for refusing to employ the chain’s stilted lexicon — balking at ordering a “tall” or a “venti” from the menu or specifying “no whip.”

Instead, she insists on making a pest of herself by ordering a “small” or “large” cup of joe.

Yesterday’s breakfast-bagel tussle heated up when the barista told the prickly prof that he wouldn’t serve her unless she specified whether she wanted a schmear of butter or cheese — or neither.

“I yelled, ‘I want my multigrain bagel!’ ” Rosenthal said.

“The barista said, ‘You’re not going to get anything unless you say butter or cheese!’ ”

But Rosenthal, on principle, refused to back down.

“I didn’t even want the bagel anymore,” she said.

The bagel brouhaha escalated until the manager called cops, and responding officers ordered her to leave, threatening to arrest her if she went back inside, she said.

“It was very humiliating to be thrown out, and all I did was ask for a bagel,” recalled Rosenthal, who said she holds a Ph.D. from Columbia.

“If you don’t use their language, they refuse to serve you. They don’t understand what a plain multigrain bagel is.”

A Starbucks employee who witnessed the incident blamed Rosenthal.

“She would not answer. It was a reasonable question,” the worker said.

“She called [the barista] an a- -hole.”

An NYPD spokesman confirmed that officers were called to the coffee shop but said he was unaware of anyone being tossed out.