Louisa flicked the napkin ball at her brother. Percy watched it fall short lazily, head propped up on his fist. Sally and Jessica had brought them both to a lunch date and now they were listening to the mothers natter on. And on. And on. And on and on and on and on and on... The twins had given up trying to get a word in edgeways, playing napkin ball soccer. They got bored of that after thirty seconds. They had gotten three more servings of cake- each- Louisa had shown him how to make boats out of the napkins, they had had a straw-on-stirrer fight, drunk their milkshakes and two bottles of water, Louisa had gone to the bathroom and come back with paper towels folded into a hat- which she wore- Percy refilled the mothers' drinks twice and they were still sitting there. Chatting.

"Hey." Louisa whispered. Percy opened his eyes, suddenly sleepy. Louisa nodded, her gaze fixing on something past him. He turned his head, as if surveying the room for something mildly entertaining, spotting a bright blur of colour from the corner of his eye. "I think we could do with some more milkshakes." Louisa commented, seeing he couldn't look discreetly.

"Indeed." Percy smiled. "Chocolate?"

"Of course." They excused themselves and started dodging around tables again, stepping to one side to let another mother and her two children pass by. Percy realised what the coloured blurr was- a very plump, very short man with thick cottony white hair that sprouted from pretty much every spot on his head. He looked relatively alright, aside from his clothes. He wore a rainbow print shirt that was three sizes too big, luminous yellow shorts and socks so white it was almost blinding, pulled up to his knees. And sandals. In his hands, he turned a wide-brimmed hat with an array of feathers from all kinds of birds. Louisa joined the queue first and looked at her brother over her shoulder, brow raised.

Percy wasn't sure what to make of it. On one hand, LGBT all the way! On the other hand... Iris, that old sea god that stunk to high heavens and could turn into a seal and, well, Iris. Louisa ordered their milkshakes before he managed any kind of response.

"LGBT personified."

"Agreed." Louisa nodded, sticking a red straw in her drink. Percy took up a blue straw and started mixing his drink. "Hey, glug."

"Glug?"

"Yeah, glug. It's a game. Basically, two people get the same drink- milkshakes," she raised her glass, "'n' drink as much of it as they can without stoppin'." Percy nodded- he knew of this game, he never realised it had a name though. "Whoever stops drinkin' or finishes their drink entirely, wins. Usually, the prize is lunch or somethin'."

"So, glug?"

"Glug." Louisa grinned wickedly. "I have never lost."

"There's a first for everything, sis." They clinked glasses. "Game on."

"Um, what are they doing?" Jessica leant to one side slightly, peering past Sally curiously. "Oh no." She rose slowly. Sally looked round. "She's taught him glug."

"Excuse me?" Jessica grabbed Sally's arm as she passed and started pushing through the intrigued crowd. Some people were standing, a few started a chant of 'go, go, go'. Sally creened this way and that, trying to see around all these people. She only saw what 'glug' was when they broke through. Percy and Louisa stood a metre apart, heads tipped back and gradually draining chocolate milkshakes. It dribbled down their chins and dripped onto their T-shirts. Sally started to say something, but Jessica nudged her and shook her head.

"There's no stopping glug."

"OK?"

Louisa tipped her head back a bit more and smacked the glass down on the counter, punching the air victoriously. Percy choked in disbelief, spluttering milkshake and coughing. He doubled over and cursed under his breath, dragging a hand across his mouth.

"Told ya I've never lost."

"But I'm always buying you lunch!"

"Then you can buy me dinner!" Louisa threw her hands up and whooped. "Alpha Twin!"

"Oh no you don't, I'm the Alpha Twin!"

"Prove it." She challenged cheekily. Percy pulled a wad of napkins from the holder and wiped his hands, dabbing at the spillages on his front. He was thinking furiously, trying to find any kind of challenge. Louisa simply used her sleeve.

"You can tell which one's yours." Jessica joked.

"He doesn't usually make that much of an effort." Sally shook her head. "I've got a bad feeling about this." Jessica hummed in agreement.

Percy looked back up at Louisa.

"Heard of the cinnamon challenge?"

"Of course. Got any cinnamon?"

"Oh, so challenge accepted?"

"Challenge accepted." Louisa confirmed with a devilish grin. "Prepare to lose. Again."

Glug is a game I used to play- not necessarily milkshakes because we didn't always have those at school, but water or juice. I won quite a lot and I was glug champion until I left. I think I must have been about nine or ten? It was a big achievement back then :P