[Olog-hai]

Science students get that particular fact about kilograms hammered into their heads. The metric unit of weight (force) is the Newton; the imperial/English unit of mass is the slug, which is 32.17 lbs on the Earth’s surface.

[FreedomPoster]

While familiar with the slug, in engineering school we dealt with, and were always careful to specify which we were using, lb_f and lb_m, the pound force and pound mass. The former being the force generated by the latter in an Earth-standard gravitational field.