Awkward
This is a rated-R story, so if you’re uncomfortable with hearing about people—how do we put this—fiddling with themselves, just scroll on by. Now that the faint of heart aren’t here, this is what went down at the OP’s home.
They hired their cousin to watch over their kid. When she was all alone, she fiddled around with herself like nobody was watching. Unfortunately, the nanny cam caught every second of her embarrassing misdeed, but the OP tried their very best to never bring it up. That came to an end when they casually mentioned the nanny cams, and the color immediately drained out of the poor cousin’s face.