You know Snape has either run or fought every single creature in the forbidden forest since he's probably going out there and gathering potions ingredients. Thusly he's often the one who will catch students if they try to go in. But I imagine there's been at least one student party he's run through being chased by some horrible beast where all the students see is a black blur yelling at them to run and that they have detention. Just sprints striaght through their party yelling at them to run leaps over their bonfire and calls out the time and place of their detentions.














