Top Definition
Similar to gaydar, this is the sixth sense many men possess which helps them to determine exactly how crazioactive a woman is.
Two guys at a bar:

Guy One: Ok dude, let's see what we've got going on tonight

Guy Two: Alright man, let me turn on the Guyger Counter

Guy One: What about the redhead?

Guy Two: No-go, still broken up over her last boyfriend

Guy One: The blonde?

Guy Two: Severely insecure because she's been a bridesmaid in 6 weddings, is nearing 30, and hasn't been in a steady relationship since she was 19

Guy One: Short skirt?

Guy Two: Jealousy issues.

Guy One: Ok, what about Glasses over there.

Guy Two: Hmm...I don't know. I'm getting a low reading, possibly within safe parameters. She's probably not too crazioactive. I say go for it.
by McGuyger January 08, 2010
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