You'd liked a girl in your class for a while—she didn't talk to anyone and you thought she was very pretty—and today you decided to ask for her number. During the teacher change, you took advantage of the empty classroom. She was sitting at her desk, so you went over and asked if she had a boyfriend, planning to ask for her number afterward. She looked at you with that blank, cute expression. I don't have a boyfriend, mister... but what do you mean by "number"? All she could think about were the numbers from math class; she's a little slow and kind of ditzy.