An absolute freak in the sheets. Not merely adopted by Excel, but born into it, molded by it. A proper sheet hacker believes that 99% of the work done in spreadsheets is unnecessary. You will never catch a sheet hacker drowning you in a sea of "tips & tricks" to marginally improve your sheet game. Your process MUST be reduced to one button or less. A sheet hacker will upend the VBA documentation in search of a solution.
"Whoa, that sheet hacker automated our entire accounting process"
"I'm collecting unemployment because that sheet hacker put me out of a job"