Everyone knows if you're going to get-it-on in a public pool, you've got to find a hot tub. This is about the opposite of that.

A 37-year-old guy named Aaron Miller and his 33-year-old girlfriend Dawn Klein were at a hot springs resort in Bozeman, Montana last Friday night.

And they decided to start doin' stuff to each other in the pool.... the kiddie pool. While kids were swimming in it.

Someone called the cops, and they pulled over Aaron and Dawn as they were leaving. Aaron tried to say they were just, "stretching" but Dawn admitted they were, "dry humping."

But five witnesses said they were having actual sex, and the surveillance footage backed that up.

So now they're both facing felony charges for indecent exposure.

Read more at CBS 2 - Billings.