This is a parody of the Lonely Island song 'Dick in a Box'. I give credit to the lines of the song that are in this to them, I didn't make up this idea. The idea is that Ron thinks that the song is a real thing done in the muggle world.
It was Christmas at Hogwarts once again. In the Gryffindor common room, Hermione and Ron sat by the fire.
"Merry Christmas, Ron!" Hermione beamed at the boy she liked.
"Hermione, I have a present for you, and it wasn't something I could put under the tree. I'll go get it." Ron scurried out of the room, leaving Hermione behind.
'I wonder what he got me.' She wondered giddily.
Ron returned with a present. He was holding it close to his body. It wasn't a very big present, but it wasn't small either. It was wrapped in red wrapping paper with gold ribbons. He was worried she wouldn't like it, but he had found a video on that thing called the intranet (something Hermione had introduced him to) that gave step by step instructions on how to give a girl a special gift. The video apparently had a lot of viewers, so he thought it must work well.
"Hermione, you know we've been together such a long time, and I'm ready to lay it on the line." Hermione was puzzled, as Ron said this with a slight beat to it.
"I'm gonna get you something so you know what's on my mind.I didn't get you a diamond ring or a fancy broom… " Ron blushed as Hermione put her hands on the box.
"I wanted to get you something from my heart, something special girl…" Hermione stared in horror at what laid inside the box as she opened it.
"It's my dick in a box!"