"The last ingredient we need is... a sample of the person's blood" explained Hermione.
"And how are we going to get the sample, Hermione?" asked Ron.
"Here's the plan" said Hermione, "you dress up as a doctor, pretend to give Harry a shot and bingo. We've got the sample of Harry's blood for the potion."
"Oh, no" said Ron, "I am not dressing up as a doctor."
A few minutes later, Ron was dressed as a doctor.
"I can't believe I'm dressing up as a doctor" said Ron.
"Don't worry, Ron" said Hermione, "it'll be worth it."
"Harry owes us big time" said Ron.
Meanwhile, back at the common room, Harry was reading a book.
When all of a sudden, Ron came in with a clipboard and a quill.
He looked at Harry and said in a deep voice, "Hi. I'm looking for a boy named Harry James Potter. You know him?"
"Yes" said Harry, "he's me."
"Oh, well" said Ron, "then, according to my calculations, you're due for a flu shot."
"A flu shot?" asked Harry, looking confused.
"Yes" said Ron, "a flu shot. I'll have to take a blood sample."
"A blood sample?" asked Harry, looking confused.
"Is there an echo in here?" asked Ron, "yes. A blood sample. Just to make sure you're healthy. Show me your arm."
Harry showed Ron his arm. Ron took out a thing with a needle and faced it at Harry's arm. All of a sudden, some of Harry's blood came into the container of the thing.
"You look familiar" said Harry, "have we met?"
"Uh, no. We've never met" lied Ron as he went out of the common room, "thanks for the sample. I'll bill you later. Bye."
"Bye" said Harry, "thanks... I think."
