Harry- When you were in the shower. Harry noticed you had your clothes layed out on the bed, so he decides to get the scissors from the office and cut holes in your shirt where your nipples would be. Like in the movie Mean Girls. Naughty Boy!
Louis- You left your twitter up when you went to get milk, so Louis takes the oppurtunity to post 36 selfies on your twitter with captions saying how amazing he is.
Niall- You come home from Walmart and you bought yourself Ben & Jerry's since you just got your period. You went to get Pjs on, and Niall took all the ice cream out of the container and hid it in the den for him to enjoy and puts the empty container in the freezer like he didn't even touched it for you to find later.
Liam- Liam took your iphone and locked it for an hour on purpose by continueously typing in wrong passwords.
Zayn- He removed the blade on your razor carefully, and placed it back in the shower, and when you went to go shave you couldn't realized why the hair wasn't coming off.