Disclaimer: I do not own Shingeki no Kyojin or anything else.

Day 10: Reiner

After the previous year when someone (he still had not figured out who) had attached fake reindeer antlers to his head, Jean knew that his squadmates would probably try to pull a prank on him this year if he did not prank someone else first. Then they'd be too busy laughing about his prank to consider pranking him. However, Jean did not know who he could safely prank - Krista was out of the question unless he wanted Ymir's wrath, and if he pranked Eren or Armin, Mikasa would probably be mad at him. Sasha and Connie would get revenge with a prank, which was exactly what he was hoping to avoid. Bertholdt was enormous, and Jean doubted pranking him would end well. That left him with... Reiner.

Jean smirked. 'Reiner' sounded like 'reindeer', which meant it would be even funnier if he had fake reindeer antlers attached to his head than when Jean had been pranked. However, that still left him with a problem - how would he attach them to his squadmate's head in the first place? Jean didn't know how whoever had pranked him had managed it, and he couldn't exactly ask them. Even if he knew who it was, it would tip them off that he was planning something. Jean would have to figure it out on his own.

Later that day, Jean decided he would dare Reiner to wear a reindeer suit. There was no way to ensure that he would actually accept the dare, unless Jean won a bet or something... 'That could work,' Jean realized. 'But what would we bet on?'

When Jean ran into Reiner that afternoon, he had a plan prepared. "Hey, Reiner, I bet that if you gave Sasha a fake potato she would recognize it is fake."

Reiner scoffed. "She's obsessed with potatoes. As soon as she sees one, she steals it. I'll take that bet."

Reiner then accepted the fake potato Jean was carrying and walked off in search of Sasha. When he found the brunette, she was sewing her sweater for Krista's contest. "Hey, Sasha, I found a potato. Want it?"

Sasha didn't even look up. "It's fake."

"How did you know?" Reiner asked, shocked.

"It doesn't smell like a potato." Sasha replied.

Reiner grumbled as he headed over to where Jean was watching. "You win."

"Great. Wear this." Jean said, handing Reiner the reindeer suit.

Reiner looked irritated, but a bet was a bet so he went to his room to change. While he was gone, Jean decided that while it wasn't exactly a prank, it should at least distract the prankster and allow him to avoid being pranked himself.

Reiner was decidedly annoyed by Jean's sense of humor. As if it wasn't bad enough that he had to wear a reindeer suit all day, the fact that Jean followed him around and continuously made puns with his name was what really made him mad. In fact, Reiner had had enough and decided to get revenge. So, he headed to Jean's room and replaced all his uniforms with a horse suit. The next day, hopefully, Jean would wear the suit in desperation. That should turn everyone's attention off of him and back onto Jean.

The next morning, Jean opened his closet and discovered it was empty apart from a horse suit. 'Great... my plan didn't even work.' Jean thought unhappily as he resigned himself to wearing the horse suit that day.