Muggles have these things called handcuffs which can sometimes get two people stuck together especially when you lost the key. Witches and Wizards have a sticking charm causes stuff to be stuck to one another. In this case it was the two youngest Weasley siblings. Their prankster twin brothers had decided to play this prank on them.
"We need to find someone who knows the counter charm, Ron," Ginny groaned.
"Let's ask Hermione, she knows everything," Ron said, instantly.
Alas, the bookish brunette was nowhere to be found as the two of them walked back to the common room.
"You don't know the counter charm, Ron?" Ginny asked her brother as they walked through the portrait.
Ron wracked his brain for the counter charm but he couldn't remember it. Who could they ask now maybe the culprits would help. Though maybe not. They sat in the Gryffindor common room stuck together dejectedly.
"There you two are," Harry said, walking in a few minutes later.
Ron looked up at his best friend.
"Is something wrong?"
"The twins used a sticking charm on us."
Harry started laughing.
"This isn't funny, Harry," the two siblings snapped at the brunette bespectacled boy.
"Yes it is."
"Do you know the counter charm or know where Hermione is?"
Harry shook his head he didn't remember the counter charm either but he did tell them where Hermione was. It was the most obvious place the library but she wasn't there when they checked earlier. Ron dragged his sister out of the portrait hole and to the library.
"Hermione!" Ron exclaimed.
The brunette looked up from her book at the two siblings stifling a laugh.
"Just do the counter curse, Hermione," Ron begged.
Hermione sighed and did the counter curse. They were finally free of each other. Now they needed to get the twins back.