" Just as Snape created a classroom atmosphere in which his Slytherins were “excited” at the prospect of a classmate’s failure, humiliation, and fear for his pet, Lupin has gotten a roomful of pubescent Gryffindors to engage in collective sexual ridicule behind a Slytherin teacher’s back, including the alarming word “forced. "

― Lorrie Kim , Snape: A Definitive Reading