Prefects' Bathroom
She nodded. "Exactly. Umbridge is this perfect little bitch in her perfect little world and I want to ruin that for her."
"I get that. So what do you wanna do?"
"So... I've actually had this plan for a while now," Lisa hesitated, "Um... sorry, it's pretty wild. Let me think about how to word this..."
"No, take your time, I've never been in the Prefect's bathroom before. It doesn't smell terrible."
"I know, right? Er- fuck, I need a cigarette to think."
Constance Masons of Ravenclaw walked in. "Why are there always people in here?" she complained.
"Oh! Constance, do you have a cigarette?"
"I don't smoke," she replied dryly.
Lisa rolled her eyes. "Of course," she muttered.
"What's that supposed to mean?" she demanded.
Lisa surged forward. "Do I look like I wanna be asked!?"
"Calm down!" Constance backtracked quickly.
"D'you hear this bitch, Albus!?"
He came to his friend's rescue and commented, "Yeah, she can't talk to you like that."
"Okay," she looked at them incredulously, "What the fuck is this? Can't you two go snog a boggart or something?"
"Snog? what is this, 1990?" he wrinkled his nose in disgust.
Lisa snapped, "Don't act like you're such a virgin! Show us your purity ring, Weird Sister!"
"Show me the guy in his 40s you're banging this weekend!" Constance countered immediately.
"Oh...," Lisa gave her a big smile, "Y'know, you're actually really pretty, Constance."
"Shut up!" she shot back, determined to look unbothered.
Lisa carried on. "No, actually... your lipgloss always matches your hair, your highlighter's always on point... you're actually really pretty."
Constance was hesitant. "...Thanks?"
That's why I want to look you in your eyes," she said sweetly, "When I stab you!"
"O-okay, I'm out of here!" she hurried out of the bathroom, not looking back.
"Knew that bitch was soft," she muttered distastefully.