Midnight at Hogwarts

It's midnight and (my OC) Carrie is bored. She turns to her side and sees that her best friend, Hermione, is still awake. "I'm bored," she admits. "Let's do something."
Hermione nods, "What do you want to do?"
"Truth or dare," Carrie replies, "but we don't have enough people."
Hermione gets out of bed. "I'll see if the boys want to play."
Ten minutes later, Carrie is sitting in the Gryffindor common room with Hermione, Harry, Ron, Fred, George, Parvati, and Lavender.
"I'll go first because this was my idea," she says. "Ron, truth or dare?"
(This takes place in the beginning of the half-blood prince)
THE HARRY POTTER WORLD BELONG TO J.K. ROWLING, NOT ME!