300 words
"I hope my head isn't too big for this," Tiffany groans, her voice straining as she tries to get all her hair inside the helmet. Yuri drops the book she was reading, liking the noise of all the annoying chapters crashing on the carpet, and walks up to Tiffany. She puts her hands on either side of the helmet, and gives it a sharp yank. Tiffany's head gets trapped inside the dome. Yuri checks her shoulders to see if they're bruised from the impact.
"I can't believe you're going," Yuri says. She takes one step back. "You look like the thing that laughs when someone pokes its stomach."
"The Pilsbury Boy?" Tiffany says. She stomps all the way to the other wall, picking up the oxygen tank from where it's resting.
"Yes," Yuri says, sneaking up from behind. She slips her arms around Tiffany's spacesuit and pokes the navel. The belt blocks her finger from sinking through.
"This suit is amazing. I can't even feel you," Tiffany says.
"You're not supposed to be amazed by that," Yuri complains. She spins Tiffany around. Tiffany lets her because resisting would cause a lot of stomping and neighbors' complaints to the police.
"Promise me you won't run away and marry an alien," Yuri says, biting her lip.
Tiffany crosses her arms. "If I had a thing for aliens, I would have left you for Sooyoung a long time ago!"
Yuri pulls Tiffany in by the shoulders, always by the shoulders. Her lips leave a smudge on the glass.