You stood on top of his night stand, hiding behind his lamp and getting ready to tease/scare him. When he comes in and lays down on his bed, looking relaxed and pulling out his phone, it's time for action. You sneak out from your little hiding place and jump onto his bed, before climbing up him, being so small that he doesn't even notice you climbing on him. When you finally get on top of him, looking like a ant on his stomach, he notices you. Immediately his cheeks flush and he sweets, as usual when you tease him. He then chuckles nervously before speaking. "Hehe, um . . w-what are you doing . .?"