Zayn and Liam are twin brothers, and they are going on a short lads vacation with their younger brother Harry. Louis (Harry's boyfriend), Niall (their best mate) and his girlfriend Amelia, and Lauren (Zayn's girlfriend) tag along for a week of summer fun. What happens when the stomach flu strikes? This story has been written through private message with @ilangel1, hope you enjoy! Some warnings: Harry often acts younger than his age (especially when he's sick), and the use of nappies will be mentioned. Vomit/bowel descriptions are sometimes graphic. Don't like, don't read! Here's their ages: Harry: 15 Louis: 16 Zayn and Liam: 18 Niall: 17