Forget Tim’s, Dr. Ignatieff. Get a stack of membership forms, camp out at Starbucks and just wait…

MANHATTAN — An English professor claims she was ejected from an Upper West Side Starbucks by cops for refusing to order according to the coffee chain’s rules, according to the New York Post.

Lynne Rosenthal, who says she holds a PhD from Columbia, told the paper she asked for a toasted multigrain bagel at the Starbucks on 86th Street and Columbus Avenue — then blew her top when the staffer behind the counter asked her if she wanted butter or cheese on top.

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“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, whose grudge against the coffee chain also extends to refusing to order by the trademark “tall” and “venti” sizes, next began yelling at the staffer to hand over her plain bagel, until the manager finally called the police, according to the Post.

Starbucks staff said Rosenthal incited the face-off by hurling profanities at the staffer.

“She called [the barista] an a–hole,” one worker who witnessed the incident told the Post.