There is a scene in “The Holdovers’’ in which boarding school teacher Paul Hunham (Paul Giamatti) asks Angus Tully (Dominic Sessa), a troubled student whom he is the guardian of over winter break, what the bottle of pills on his bed is for. Angus quickly brushes them off as being for his “low energy,” to which Paul bluntly responds, “You mean for depression?” Angus changes the subject and walks out of the room while Paul takes a few of the pills.