For me, if I ever say IEC mains lead I get a blank expression. C13 even more so.
"Kettle lead" (Which is notched to indicate it can take a higher temperature and most of cables aren't that, they will be the c13 type), and their face lights up and a cable will be handed to me.
Just one of those things that's wrong, but it's not worth being pedantic over it, imo.