One night during my freshman year at college, a couple of us got bored and started ambushing people that were studying whilst dressed as Star Wars characters. More people joined and then someone said we should make a movie. This is the that.
Ted is smoking weed in his and Marshall's dorm room and the door is flung open. Marshall stands there, all high as well.. smiling.
Ted: I thought you were going out.
Marshall: laughs... I couldn't find outside