The Slytherin group (Mattheo Riddle, Theo Nott, Tom Riddle, Enzo Berkshire, Blaise Zabini, Draco Malfoy, Pansy Parkinson, Y/N) is chilling in the common room and the others notice Mattheo’s and Y/N’s tongue is purple

Draco: ugh your tongues all purple Draco looked at Y/N and Mattheo Y/N: purple…is it really? Mattheo: wait mine too? Theo: did you two drank purple dye or something? Y/N: we had shushes…wait…that’s why…i told you not to use your tongue Pansy: eww gross