[He's trying to be polite, Mike thinks. It's an attempt at keeping things civil, after finding out the truth. In a moment, Peter will excuse himself from the conversation entirely, and their friendship will be over. It's kinder than Mike deserves.]
it was my birthday i'm sixteen
[It sounds pathetic, like some kind of excuse. Like he's asking Peter to go easy on him.]
no subject
it was my birthday
i'm sixteen
[It sounds pathetic, like some kind of excuse. Like he's asking Peter to go easy on him.]