With regards to Carrie, Midnite, yes and no. (This is referring to the Brian De Palma version of 1976, not the 2002 made-for-TV version which was also fantastic). The fundamentalist fantatic Margaret, the mom, utters the line after Carrie leaves her bedroom on the way to prom. Later, while Carrie and her beau were at the prom, the scene switches to the mom who, in the kitchen of their home, picks up a knife and begins to chop away at carrots as if beheading them, giving indication of what she intended to do.
Gerard