I, who have no friends, have never had my birthday celebrated by anyone other than family. Even though it's my 20th birthday, my sister gathered some friends for me out of pity, but they were just there to drink and make noise. 'Again this year...' I thought dejectedly, when suddenly, as a birthday present, they started flashing panties and cleavage! And that wasn't all—before I knew it, I was experiencing 3P and even 4P!
