A person who stalks people using their phones, laptops or other connected cameras. A so-called "hacker" who breaks into your device just to stalk you using your camera.
A golf term used to describe a shot hit out of bounds where there are houses. (Presumably containing milfs whose wealthy husbands are working to pay for the house on the golf course.)
"Looks like you hit a milf-rattler Dude, that shot definitely hit a house."