Based on the spoilers going around (ish- there aren’t any actual spoilers in this) and this post. Basically, Closet!Jock!Klaine and shower blowjobs.
The football team runs into the locker team with a chorus of whoops and hollers. It’s their first win of the season, five games in, and though it’s not likely they’re going to win championships, things are looking up. Kurt pulls off the red jersey, tossing it across the room in celebration. Boys pat him hard on the shoulder pads and pick him up in rib-crushing hugs. “Good job, Cap,” they say before chest bumping someone else. There’s a hard slap on his ass that sends his hips jutting forward.
"Great game, Captain." Blaine smiles boyishly at him and joins in on an impromptu round of "We Are the Titans."
Kurt dawdles in changing, taking off his pads as slowly as he can get away with, frequently pausing to congratulate a player for a great play. “Fantastic pass, Evans,” “Nice run to the thirty, Chang.”
He’s the last one in the showers. As he washes away the sweat and blood and grass, he pays close attention to the sounds around him. The conversations fades out into the hallway and the loud slap of feet against the concrete floor disappear.
A pair of strong arms wrap around his waist. Kurt flinches and pulls away, facing the intruder.
"Jesus, Blaine!" He huffs. "Are you trying to get us caught?"
"There’s no one here," he reassures, and Kurt sure hopes he’s right because even he can’t try and explain why he and Blaine are naked together in the showers.
"And earlier?" Kurt chides, stepping back as Blaine crowds him. "Everyone was around."
Blaine chuckles and Kurt hates that he can never stay mad at him. “No one thought anything, Kurt. I had about thirteen other guys slap my ass out there.”
"Bet you loved that."
"There’s only one pair of hands I want on me."
This time Kurt doesn’t stop Blaine. He grabs Blaine by the hips and tugs him in closer, their wet bodies sliding so perfectly against each other. They kiss with a practiced ease, biting and licking and teasing. With a bit maneuvering Kurt has them line up just right, their cocks slipping easily together with the water to lubricate the glide. Blaine groans loudly, his voice amplified and echoing loudly around the room.
As much as the sound turns Kurt on, they’re going to have to be a lot quieter. They can’t risk someone hearing them. Thankfully, Kurt knows the perfect way to keep him quiet. He places his hands on Blaine’s shoulders and pushes down, waiting for him to take the hint.
Blaine does. He smirks at Kurt before trailing kisses down his neck, his chest, diverting his rout from time to time to lick up a fat drop of water. Finally, he sinks down to his knees, nipping lightly at Kurt’s pelvis before licking a wide stripe up Kurt’s cock.
Kurt shudders. They never get to do this. Usually all they can manage is a quick make-out session and grope in the janitor’s closet during lunch, or a wink across an empty hallway. It’s still so new to them both, and when Blaine takes him all the way in his knees nearly give out.
He works his hands through Blaine’s wet hair and guides his head closer with a light touch. Blaine doesn’t pull back; he grabs Kurt’s ass and pulls, swallowing around him until his nose nestles into the hairs at the base of his shaft and the tip of his cock slides down his throat.
"Yes," Kurt hisses, his hips jerking forward just slightly, going further down. He’s already so close, and when Blaine dips his finger between Kurt’s cheeks he only just thinks bite down on his fist. He comes with a stifled moan, leaving little indents on his knuckles.
He falls back onto the cold wall and lets his body fall, sliding slowly until his ass hits the floor. He’s out of the hot spray like this, and the air is freezing against his body. Blaine crawls up next to him, curling into his side.
"Oh," Kurt exclaims quietly, "let me…" he reaches out between Blaine’s legs to find him already softening. "Did you?"
"Yeah," Blaine admits meekly. "The way you looked… I…"
Kurt cuts him off with another kiss, lazy and gentle. “It’s okay. But next time I want to see it.”
"Alright. Next time we win, you get the congratulatory blowjob."