slide rule 

Used as an adjective, this means old-fashioned, out-of-date. Usually applied to attitudes.

Man, Mr. McMahon is so slide rule! Why does he always use long division, when there's a calculator right on his desk?

slide rule by pentozali May 1, 2008

slide rule 

a tool made up with two or three rules that are skewly and weirdly marked. Allow you to slide back and forth to get some calculations done.

NOT FOR MEASUREMENT AND PUNISHING PEOPLE WHO ARE MISBEHAVED.

Man1: OMG, what's wrong with ruler, it has too many strange marks and are almost skewed. How could someone measure stuff out of that?
Man2: Bro this is a slide rule.

slide rule by DDDooordddy September 28, 2018

eight slice rule

If a salad or any other plate of food contains eight slides or more of bacon, then the entire plate becomes bacon.

I am invoking the eight slice rule, Dendy.

eight slice rule by DGGG December 25, 2021