Pet show.

"Let's cut to the chase, baby," your eyes follow Ivy as she struts until she walks behind you, "This time of year every year all of my friends become preoccupied with their little hobby, leaving poor, lonely Ivy behind." She places her hands on your shoulders and leans her chest against your back. "This year though... this year I will not be left behind. I'll join my friends, like the good friend I am, and we'll have such a blast together. Doesn't that sound lovely?"

On any other day at any other time you would have loved to have a beautiful redhead all over you, but this is Poison Ivy. A villain. A killer. She is dangerous and unpredictable.
"Ah... uh.. sure, wait... what do you need me for? What kind of event is this anyway?"
Ivy moves her lips close to your ear, so close you can feel her breathing on your neck, and whispers, "Pet show."

You shudder.
"...you want me to find a pet for you?" you say.
Ivy moves in front of you. She is holding a leather collar in front of you with a chain attached, "Guess again."