US Marshal arrested for pointing gun at McDonald’s cashier

He’s not “lovin’ it.”

An impatient U.S. Marshal tired of waiting for his food at a Brooklyn McDonald’s pulled a gun on a cashier hoping it would expedite service — but was instead arrested, cops said Sunday.

Deputy Marshal Charles Brown entered the fast food joint in Bay Ridge around 1:20 a.m. Saturday, according to police.

Soon after, he began to yell at cashier Joanna Diaz, 41, about the long lines and his presumed hunger.

When that didn’t work, an irate Brown whipped out a gun and pointed it at Diaz, before wheeling around and waving it at other terrified customers at the at the 86th St. eatery — including one who tried to intervene on the cashier’s behalf — cops said.

While Brown was able to place his order before cops were called, he left his food behind when he fled the joint, a police source said.

The Marshal was later found drunk nearby, the same source said.

He was arrested and charged with menacing and reckless endangerment.