864 words. Origionally from thekm11 on Tumblr
Sirius: Hey, Prongs.
James: What is it?
Sirius: Truth or dare?
James: Dare.
Sirius: I dare you to ask Evans out.
James: HEY EVANS!
Lily: What?
James: Will you go on a date with me?
Lily: No.
James: Wormtail, truth or dare?
Peter: Truth.
James: Which one of us would you marry?
Peter: Uh… Padfoot. Keep the cats away. Mooney, truth or dare?
Remus: Truth.
Peter: Out of the three of us, who would you set on fire if that was the only way for you ever eat chocolate again?
Remus: I’m going with Sirius.
Sirius: Why!?
Remus: Stop, drop, and *in a baby voice* roll over, boy.
Sirius:*growls*
The Marauders:*laugh*
Remus: Sirius, Truth or dare?
Sirius: Dare
Remus: I dare you stand up and officially announce your and Peter’s engagement.
Sirius: HELLO. CAN I HAVE YOUR ATTENTION?
Lily: Sirius, there are only ten people in here, you don’t have to shout.
Sirius: PETER PETTIGREW AND I ARE OFFICIALLY ENGAGED… UNLESS MCGONAGALL RECONSIDERS!
Peter: You’d leave me for McGonagall?
Sirius: I asked her first. I can’t go back on my promises.
Peter: But… You asked me second.
Sirius: I’m sorry, Pete, but this is not a case of best for last.
Peter: NOOOOOOO!
Sirius: Anyway, Truth or dare, Prongs?
James: Dare!
Sirius: I dare you to set the dorm on fire.
James:*disappears* *comes back down with Lily three seconds later covered in smoke*
Lily: I can’t believe you set the dorm on fire! What is wrong with you!?
James: Truth or dare, Evans. Wanna play?
Lily: No, I do not.
James: Mooney, truth or dare?
Remus: Dare.
James: I dare you to get ALL the grease off of Snivillous’s hair.
Remus: If I never come back… I want a monument dedicated to me in the great hall *leaves* *comes back after ten minutes* He hexed me. I couldn’t remove all the grease without removing all his hair. *holds up a strand of Snape’s hair*
Marauders:*high five*
Remus: Wormtail, truth or dare?
Peter: Dare.
Remus: I dare you to go to bed 2 hours earlier than usual and not let your thoughts trouble you.
Peter: I can’t do that! Padfoot?
Sirius: Dare.
Peter: I dare you to put a bowl of cat treats on McGonagall’s desk.
Sirius: Where’s the cloak, I’ll be right back. *gets invisibility cloak* *leaves* *comes back after 10 minutes* I did it. She didn’t catch me. I was going to stay to see if she ate any of them, but we have class with her tomorrow.
Remus: You and James are tied for first and Peter and I are tied for last.
Sirius: James, I dare you to wear nothing but the invisibility cloak to the kitchen. When you’re there, tell the house-elves that you’d free them, but you’ve given everything, including your body.
James: You’re on *leaves* *comes back after 20 minutes* The elves attacked me. I managed to stay under the cloak, but they attacked me. You ready?
Sirius: Bring it.
James: I dare you to go up to the astronomy tower with your broom. When you’re up there, tell everyone that you’re flying away to never land. Fly off of the tower to where people just can’t see you, then get under the cloak and fly from there all the way back to our dorm where we’ll be waiting with an open window.
Sirius: Please, I would do that even if you didn’t dare me to.
~15 rounds later~
Remus: You two are so shameless. So, I dare both of you to go down to the great hall. When you’re there, tell everyone that they’re invited to the wedding tomorrow. Don’t say whose wedding. Then, tomorrow during breakfast, both of you are to stand up and start a food fight, yelling about how the wedding is off because Sirius is cheating on you with Peter and James is cheating on you with Lily. If a food fight doesn’t happen in the next five seconds, you both have to do The Macarana in your underwear at the teacher's table until you get detention. If a food fight does happen, you have to find Peter and Lily and propose to them instead.Sirius and James:*look at each other* *look at Remus* *look at each other again* *nod* Deal. *run down to the great hall*
~The next day~
Sirius: THE WEDDING IS OFF! *throws a pancake like a frisbee*James: What did I do? *dumps a plate of eggs on Sirius*
Sirius: YOU KNOW WHAT YOU DID! *pours Pumpkin juice on James*
James: WELL, THE WEDDING IS DOUBLE OFF AND I’M LEAVING YOU! *slaps Sirius with bacon*
Sirius: WHY ARE YOU LEAVING ME? *throws cornflakes*
James: YOU CHEATED ON ME WITH PETER! *pours syrup on Sirius*
Sirius: ONLY BECAUSE YOU CHEATED ON ME WITH LILY! *throws granola bars at James*
Remus: That’s five seconds. Macarana time!
James and Sirius:*rip their robes off* *run up to the teacher’s table* *start doing the Macarana*
McGonagall: Mr. Potter! Mr. Black! Stop this instant. Detention for both of you!
Remus: I guess we’re going to have to figure out another way to end this truth or dare.

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Head canons
FanfictionElaborating on head canons. The Avengers, HP, TMR, THG, Sherlock, etc I DO NOT OWN ANY CHARACTERS.