Brain
"Ron!! Don't touch the brain!"
Ron, Harry and Hermione were in the brain room in the department of mysteries. (Which the movie left out…) Just after Harry told Ron not to touch the brain, Harry bumped into the aquarium… thing that the brains were in, breaking the glass. One of the piece came flying off almost like it was controlled by magic, cutting the top of his head clean off. He fell to the floor and his brain fell out.
Sensing the other brains floating around it went off to play leap-frog with them. Considering Harry didn't even use his brain that much it didn't make that much of a difference other then he kept on scratching the hollow insides of his skull. "Slimy…" He said with a smile on his half-face.
Shocked, Ron and Hermione started talking to each other. "But… No one can live without a brain!" Hermione was starting to hyperventilate.
"We should put it back in…" Ron stated, while watching the energetic brains leap over each other.
"But which one is it?"
"Does it really matter? Any brain would be better then the one he had!" Ron said with a serious look on his face.
"Ok then…" Hermione grabbed two random brains and brought them over to Harry and Ron. "So, which one?"
"Umm…" Harry looked at each brain in turn and stated "I like the pink one!"
"Harry," Hermione said in a controlled voice "They're both pink…"
"You know, the one with all the fold-y things…"
"Right…" Ron said, picking one of the brains out of Hermione's hand. "Here you go…Let's just hope that you will become as smart as Hermione now."
He plopped the brain into Harry's head and then took the top of it and welded it back on. "Let's take you to St. Mungo's to fix your head…"
-At St. Mungo's-
After recovering, Ron and Hermione were surprised to see that Harry now had an IQ that was higher then his age or shoe size. He was now able to mathematical equations in his head that he hadn't been able to comprehend before.
'Two plus three is… five!'
'Amazing! Just last week we asked him the same question, and he said seven!' Hermione was dazed.
But, alas, it could not last. Harry's head was simply not used to this mental capability. So, when Hermione asked him ten times ten, the unavoidable happened.
BOOM
Harry's head exploded.
