Disclaimer: I do not any of the characters or the setting that belongs to J. K. Rowling. I barely own the plot. The title of the story is copyrighted by the people who own the movie, Thirteen Going on Thirty. So there no one can sue me now hahahahahaha (sticks tongue out); not that you would get that much money.

Summary: Draco passes out from a potion mistake that sends him to the future. He wakes and he is thirty years old. Married to his enemy and has three kids. The story is not from thirteen to thirty it is more like sixteen to thirty, but I did not like the way that sounded so I left the original title. Disregard the events that happened in HBP because I refuse to acknowledge the fact that Dumbledore is dead. This story will contain Mpreg and slash. I told you this now so don't get upset and flame me. So if you do not like these things I suggest you LEAVE NOW. Those of you that don't have a problem with this ENJOY:)

Thirteen Going on Thirty

"Today we are going to make the difficult potion for invisibility." Snape said while entering the classroom. "Does anyone know why this type of potion is so difficult for most people?"

As usual Hermione was the first one with her hand in the air; also as usual Snape ignored her. "Mr. Potter would you like to tell us why."

"No"

"And why is that?"

"I don't know" Harry answered in a small voice.

"Excuse me, I didn't quite hear you"

"I said I don't know"

"Well you would have known if you bothered to have read the assigned reading from last class. Five points from Gryffindor for not doing the homework and five points for being unprepared for class." While turning to the Slytherin side of the classroom, "did anyone bother to read the assignment? Yes, Mr. Malfoy."

"The problem with this kind of potion is it is one of ninety-six known potions that have the same exact ingredients and if the potion maker measures anything wrong even if it is by half of a gram, stir one to many times, or stir in the wrong direction the potion will not turn out to be the intended."

"Ten points to Slytherin for actually doing the assignment. Now class knowing this information I suggest you read the directions very carefully. Now the partners for this potion will be the following: Granger and Crabbe, Goyle and Weaseley, Longbottom and Zabini, the list went on to Malfoy and Potter."

"Awe man why am I always paired up with Malfoy?"

"It's a conspiracy mate" Ron replied. "I think the teachers either think the rivalry will end if you spend enough time together or they just like watch you two fight."

"Oh that's a nice thought and when did you become so perceptive?"

"Well…" before Ron could answer the question Draco interjected "I'm sorry that I'm interrupting your little heart to heart Potter, but I have a potion to make."

"Malfoy, you being an arse! Do you work at it or does it come naturally?" Harry asked him with actual curiosity.

At that moment Snape walked by. "Potter, why are you talking you should be working on your potion I see you haven't even started yet. You only have this class to complete the so I suggest you get started, and soon With that, Snape went off to terrorize some of the other Gryffindors.

"Potter why don't you get the ingredients and I get the potion started with what I already own."

"Why do I have to get the things?"

"Because I don't want you touching my things and chances are if I let you work on the potion by yourself you are going to fuck it up."

"I will not"

"Name one potion that you have made correctly without the help of myself or the Mudblood."

"Don't call her that."

"Answer me Potter."

"Whatever, I'll get the fucking ingredients" he stormed off to get the ingredients.

"That's was I thought," Draco said with a triumphant smirk. He went off to working on the potion. When Harry came back to the table, he ordered "Potter, chop the pomegranate!" while handing the fruit to Harry.

Harry went on to chopping (or what he thought was chopping) the pomegranate. "What the hell do you think you are doing?"

"I'm chopping just like you told me to."

"That is not chopping that is mincing. What the fuck part of 'if you do not follow the direction exactly it is not going to come out right' don't you understand?"

"Shut up."

"Just go and weigh the leeches for the potion. Remember 30 grams nothing more and nothing less."

"Sure." When Harry was measuring the leeches he could not manage to the leaches at thirty grams it either 30.00001 or 29.99998. No matter what he did he could not get it to thirty exactly. "This is ridiculous I'm sure that that .00001 extra won't do anything to the potion." He muttered to himself. Then he turned to Draco. "Here are your stupid leeches; is there anything else you would like me to do?" Harry asked making sure he said the second part of the sentence as sarcastic as possible.

"Actually yes since I already know you can mince I need you to mince the ginger root over there then give it to me." Harry grabbed the ginger and began to mince it. As he was mincing it cut his finger.

"Professor Snape, can I go to Madame Pomfrey."

"Why?"

"I cut my finger."

"Mr. Malfoy, can you finish the potion by yourself?"

"I don't know, Potter will be leaving me hanging here, but I think I could do alright on my own."

"Okay Potter you can go. Oh, ten points from Gryffindor for your clumsiness." And with that Harry was gone.

About fifteen minutes later

"Professor Snape, I'm done with the potion and I have it in a vial. Do you want me to hand it in now or at the end of class?"

"You can hand it in now if you would like to, and make sure you clean up your work area."

Draco started to clean out the cauldron. As he was about to dump the rest of the potion that he made Neville bumped into him, causing erased it, put the potion to fall all over him. Before Draco could yell at Neville for being a clumsy oaf, he promptly passed out in a very Un-Malfoy like style.