Mrs. Doubtfire Improvised Line

In 'Mrs. Doubtfire' (1993), when Mrs. Doubtfire is fishing her teeth out of the wine, she says, "Carpe dentum. Seize the teeth." This line was improvised by Robin Williams as a reference to 'Dead Poets Society' (1989), in which his character says, "Carpe Diem. Seize the day, boys." This fact was confirmed by the director. (Video in Source)