Pandora here today with the prompt 'cinema'. In this Yuri is 18 and JJ is 21 - this is set a little while before Loud (Chapter 1).
When Mila and Sara suggest going to see a film at the cinema, JJ and Yuri agree to go fairly readily, along with Viktor, Yuuri and Pichit. Once they're all sitting in the cinema and the film starts, however, Yuri realises how bad an idea this was. On one side of himself and JJ, Pichit and Yuuri are making fun of the dialogue and on the other Mila and Sara are loudly discussing the logistics of a threesome with Keanu Reeves. Stuck between the two groups, Yuri rolls his eyes at the terrible Russian accents in the film and settles his head on JJ's shoulder. The film is about ninety percent car chase scenes and guns being waved around, and Yuri's attention wanes – he finds himself thinking about the lovely feeling of JJ's shoulder under his face. It's warm and he's sleepy from late night practices; he feels himself starting to drift off...
He gasps and sits upright, biting his lip to keep from being too loud in the theatre. JJ's hand, which was resting by Yuri's thigh, has moved into his lap, the fingers cupping Yuri firmly through his jeans. Teeth digging into his bottom lip, Yuri turns to look at JJ in the dark, eyes wide, and gets a smirk in response as JJ's hand squeezes Yuri's slowly-growing erection. Yuri whimpers, unable to make any other sound if he wants to not draw attention to what they're doing, and JJ's lips find his ear.
"You okay kitten?" There's a teasing lilt to his tone but underneath is the genuine question, seeking Yuri's consent before anything continues. Despite the thumping of his heart and his shaking breath, the thrill coiling inside Yuri prompts him to nod. JJ guides Yuri to lean back against him and they ignore the rest of the film.
By the time they're leaving the cinema, Yuri wants nothing more than to get back to Lilia and Yakov's and let JJ pound him into the mattress. He's impressed with his own self-control, simply holding JJ's hand as they all exchange goodbyes. While Yuuri is telling some story Yuri supposes is meant to be funny, his phone buzzes and he checks it to see a message from Pichit:
'Did you have fun? :D'
Yuri glares at Pichit, who grins and wiggles his eyebrows, and then sends a reply:
'Not a fucking word.'