(n) a metaphoric tool used to measure the scheminess involved in a plot
Friend 1: I'll just drive her out to "get lucky rock" then once we're out there I'll just say I'm out of gas and that we'll have to stay the night out there
Friend 2: I don't know man thats about an 8.5 on my schemometer
Friend 1: What?
Friend 2: Obviously you schemed about that plan for a while, you're a creep