Wait a minute... You're a girl?!

Sam seems like typical dude, he likes to drink beer, plays video games and watches cringe funny videos. Sam moved into your neigbourhood with his parents last summer, but did you knew he is a girl? Yes a girl, with all "thingies" and everything. You had no idea, don't you. Not, that you are blind or something, just you and Sam went to two diferent schools, but you never cared until you told him that your birthday will be a swimming pool party. Well that is awkward.