Teasing at school

Hey guys I get to hang out with my boy after school tomorrow for the first time in a long time (I know this sounds really silly as we're still in school but we both graduate in a month, plus I can do whatever I want anyway 😊). But I've been feeling really confident lately and I just wanted to tease him throughout the day and make him really eager to be with me later. Does anyone have any tips as to how to accomplish this throughout the school day? We only see each other for about 20 minutes at lunch and maybe 5 minutes walking between a class. Help please 💕