Audio problem: When Jane and the purple elephant were "getting intimate" in one of the changing rooms at her work, she was talking to him but her mouth wasn't moving. (00:44:10)
Audio problem: When Courtney and Christina are in the club bathroom (right after the shot of the girl with the vomit on her face puking on her friend) the camera pans over to them both. In the mirror you see both of them talking but their lips are not moving to the sound you hear.
Answer: Without needing an "X" rating: A glory hole is most commonly found in men's restrooms, used for sexual purposes. A quick web search might provide more (yet too much) information.
Ral0618