PAWHUSKA, OKLAHOMA — A substitute choir teacher was arrested for indecent exposure after she did a cartwheel in front of a high school class when she wasn’t wearing underwear.

Lacey Sponsler, 34, exposed herself to a room full of students last Friday at Pawhuska High School in Oklahoma, the Smoking Gun reported.

Apparently Sponsler was wearing a long dress, but no drawers, “which caused her to expose herself to the students in this class,” authorities said.

“This act was captured by a student on their cell phone,” police chief Scott Laird said.

Sponsler performed the cartwheel in the choir room when her dress “flipped up,” exposing her backside, according to a probable cause affidavit.

A 17-year-old female student told authorities that she saw Sponsler’s “vagina open and close, as her legs were in the air.”

The girl also said the substitute teacher had been talking about drug use and mentioned how she “thought 14-year-old boys were like men.”

Sponsler reportedly told the cops she was “just dancing” with the students, according to the police.