Neither notice when a deep intrusion occurs

The brushing at her slit became a poking from behind.

"Hey!" she hissed, taking care to be quiet. She didn't want to get fired because of this.

"What? Just cleaning."

"Up there?"

"Sand gets everywhere," the guy said, the other two snickered.

"Someone will see!"

"So kneel and it won't be as obvious."

Rachel squirmed on the end of the soft stick, trying to decide before Lana or Bert or anyone else noticed. It actually was kind of nice, especially when he flicked her clit like that.