Police caught a substitute teacher with her pants down in Pennsylvania.

49-year-old Kelly Aldinger was caught having a sex with a 17-year-old boy in a cemetery.

An officer doing routine patrol found the couple inside of a car in the Easton Cemetery.

She’d met the victim while she was working as a substitute teacher at Easton Area High School.

“The relationship started approximately a year, year-and-a-half ago, and the juvenile victim was a student at one time of Ms. Aldinger,” said Lt. Matthew Gerould.

She’s confessed to having sex with the underage teenage victim several times since last fall.

She’s been charged with institutional sexual assault, and has been released on $50,000 bail.