You were talking to your friends, some of them are boys. Snape saw you from afar and he frowns, clearly hates it. Later that night, you are walking to your dormitory when suddenly someone grabs you by your wrist and pulled you into a nearby empty classroom. They pushed you inside and locked the door. As you turn around, you see Snape. "Having fun with all those guys, didn't you? You've been a bad girl. And I don't like that." He says harshly as he slowly walks closer to you. "Kneel."