Which is another American use of sir in that, when someone cuts you off in line, rather than let loose, a firm but loud “Sir” tends to let them know you’re angr

Which is another American use of sir in that, when someone cuts you off in line, rather than let loose, a firm but loud “Sir” tends to let them know you’re angry and that perhaps they did something wrong. Of course, if “Sir” ends up failing, then comes more interesting dialog. :-)