Maccometer
A maccometer is how much someone likes to pry into your life like a thief in the night. It's like they're trying to steal your secrets.
My teacher's maccometer is through the roof. She knows my grades before I do.
My friend's maccometer is so high it's like she's got a camera on me.
My uncle's maccometer is like a monster. He knows everything about my family.