The smirk:
Puck sat in the choir room with everyone except Kurt and Rachel who hadn't arrived yet. He strummed his guitar quietly, humming a little tune he had been working on. Rachel arrived, and she looked different. It hit puck immediately. The glow, the little guilty smile. Rachel Berry had lost her V card. Puck had a sinful smirk on his face as he kept staring at Rachel. Rachel noticed it but shrugged it off at first, until she realized Pucks gaze wasn't leaving her, which left her a little perturbed. School had ended, and Rachel was now at her locker. As she siphoned through her many books she felt someone behind her. She turned to see Puck with the same smirk as before.
"What?" she asked. His smirk changed into a Grin
"Puck, I'm in no mood for your tomfoolery", Rachel returned to her book. Puck got close to his shorter friend's ear and whispered
"I know". Rachel slammed her locker shut. She turned slowly to look at the Mohawk jock. Her eyes were wide with mortification, her lips thin. All color drained from Rachel's face.
"You look like the corpse bride" puck commented. Within seconds he felt the iron grip of Rachel's delicate hands grab the front of his shirt and slam him into the locker. Puck was equally impressed and petrified.
"Listen, and listen closely, Noah Puckerman. You spill about me and Finn and the loss of my virginity, and I will tell your mother where you keep your adult magazine collection." Puck was frozen
"You have-"
"Under the floor board under your bedside table", Rachel interrupted.
Puck wanted to say something, but Rachel once again interrupted
"I have dirt on everyone", she whispered. Puck no longer had a grin or smirk. Rachel patted a dumbfounded Puck and walked up to him. The Mohawked badass went down the hall to see Kurt and Blaine talking at Kurt's locker. Blaine kissed the taller boy on the cheek and walked off. Kurt sighed in a heavenly fashion and went through his locker with the dopey lovesick smile that Puck knew all to well. He walked over to Kurt with his grin.
"Hi Puck" Kurt greeted.
"Didn't see you or Blaine in Glee today" Puck said, his grin unchanging.
"Oh, yeah me and Blaine were…studying." Kurt said nervously.
"Was it an anatomy test?" Puck asked slightly.
"Excuse me…?" Kurt went wide-eyed and dead white when he realized Puck knew. Once again Puck was slammed into the locker.
"Listen Puckerman if you breath a word of my…loss, I will go Alex Forrest on your ass. Understand?" Kurt barked
"I have no idea who that is," Puck muttered. Kurt sighed, annoyed.
"Glenn close fatal attraction get it on Netflix" Kurt let go off the tall boy and walked off. Puck realized that maybe he should keep his mouth shut. It was then he saw Mercedes walking down the hall in his direction, another one with that same smile. Knowing Puck he hadn't learned his lesson he decided to tease Mercedes.
He was about to open his moth when she turned to look at him and said
"Don't even think about it white boy" Puck just stood there his mouth still open.