I like the comment about asking if her legs were broken unable to stand?
My dad being very old school way of thinking/acting, after 30+ years working in a GM factory, told a huge black lady if she cannot do her job go back to the kitchen where she belongs. That got him into big trouble in the 1980s before retirement since even though it was true she could not keep up working on the line having to shut down the line to make up for her slacking, he cannot say that ever about the kitchen comment. After over 1 hour discussing her slowness and inability to work productively, his bosses let him go back to work. Dad turned around and told them thanks for the 1 hour break.

You say anything like that now, is probably immediate termination.