The difference between green and yellow
"George why are we hangin' upside down" Fred said in a puzzled tone yawning.
"Fred don't you remember last night" George used his 'plainly annoyed tone' or shouting as other people liked to call it.
"Oi keep your voice down I'm too young to go deaf" Fred said clearing out his ear dramatically and trying to remember last night. From what he could remember it was pretty ordinary. Before dinner Ron and Hermione a shouting match about some daft issue and it was interrupted by mum shouting at Ron to stop shouting at Hermione. While they were doing that George and him had snuck down and put their new brilliant formula in the soup. It turned anyone who eat it hair's green then they had dinner and waited for the effects to start they had to eat as well just to make sure they wouldn't be under too much superstitious they could always blame it on Ron if something went wrong. They waited and talked but nothing happen so he and George went to bed and then they woke up hangin' upside down.
"So" Fred said clearing not getting at what George was explaining.
"Fred which bottle did you get last night" George said slowly as if he was talking to a baby.
"The one with a green liquid on our desk why do you ask bat" Fred said not really getting why George was so upset with him.
"You mean the yellow liquid right Fred" George said hope clearing in his tone.
"No I defiantly remember green liquid by the way the potion stunk what was the special ingredient." Fred said nose wrinkling slightly as he remembered the smell.
"Fred that wasn't the hair colouring one that was the one which kept you upside down for two hours" George said slowly.
"When do you think it will happen to the rest of the family" said Fred clearly fearing the wrath of one Molly Weasley.
"FRED AND GEORGE WEASLEY WHAT HAVE YOU DONE TO US" yelled one very clear voice even over all the screams of the family (Harry and Hermonie included) waking up upside down.
Fred and George visibly paled wondering how they would be able to get out of this one.