A white woman dubbed “Swing Set Susan” claimed to be a cop and harassed a group of Hispanic teens in a profanity-laced tirade in Texas — telling them that they were too old to be at an all-ages park, new video shows.

Video posted to Twitter by one of the teens shows the group playing on an orange swing set at Fort Worth’s Dream Park around 3:40 p.m. Wednesday when the blond woman, wearing a blue and white shirt, a pair of athletic shorts and sneakers, confronted them.

“Stop! Stop!” the woman snaps as the group falls silent. “It’s a children’s park, stop. Stop now.”

Then she puts her hand on the still-moving swing in an effort to stop it — but it’s unclear if one of the teens was still swinging at the time, as a portion of it was cut out of the frame.

“We are children?” one of the confused teens can be heard saying.

“No, you’re not,” the woman barked. “And if you think you’re a f–ing child, are you over the age [allowed here]?”

The teens tried to tell the stranger that they were not — but to no avail as “Susan” continued lecturing them.

“OK, well,” the woman says while waving her hands, “I’m a f—ing PD, so get the f–k out of here now if you’re not here to play as a child. Read the f—ing sign.”

In a Thursday tweet, Fort Worth police confirmed the woman was not employed with their department, but instead was “a possible local resident.”

“We are actively investigating this incident for several potential criminal charges including Impersonating a Public Servant and Disorderly Conduct,” the department wrote.

In a statement, Fort Worth’s Parks and Recreation Department said the city’s parks and playgrounds “are open to all ages,” though some playground equipment is recommended for either ages 2-5 for preschool children or 5-12 for school-age children.

The woman’s name was not immediately released, and it was not clear Friday morning if she had been identified by authorities.

“We were just trying to play,” the teen tweeted, along with the video. “I guess we’re adults.”