similar to 'fuck me sideways' but with a harsher meaning and used often to describe something so fucked up and outrageous it's not even funny. also a california shit bitch
A line on a graph representing the amount of times a person talks about his/her abs, his/her dad, workouts, coupons, or politics compared to the total amount of talking they do. The slope of an average person is about 0.001, while the Weiskirch diagonal has a slope of around 0.83. Any person who exceeds the slope of the Weiskirch Diagonal should be put in a mental hospital and should also be forced to eat only stale bread for the rest of their lives.
Will: Man, that guy at the gym really knew his coupons.
Jim: Did he talk about them a lot?
Will: Yeah. He and his dad both crossed the Weiskirch Diagonal.
Jim: I hope they like stale bread.
The Vicky Mendoza diagonal is a specific kind of line on the "Hot/Crazy Scale". The Diagonal runs straight from the bottom left corner to the top right, signifying that the woman in question is crazy, but her hotness balances this out.
The Hotter she is the more crazy she is allowed to be.
Also see "Shelly Galesby zone" in which a girl is crazier than she is hot.
Guy1: that girls pretty frickin' crazy.
Guy2: Yeah but shes also hot. definitely on the vicky mendoza diagonal.