"I think we'll both find this interesting," the white bunny girl continues. Calmly, she reaches out and rubs one of the digits on that paw of hers around your neck. You try to jerk your head back, but are helpless as you feel a viscous fluid melting onto you wherever she touches. Eventually, she's traced a full circle around your neck, and as she brings her other hand forward you hear a gentle tinkling. Finally, she walks across the room and picks up a hand mirror, turning it to you so that you can see her handiwork: a brown latex collar that now adorns your neck, a golden ball hanging off the front of it and making a jingling noise every time it moves.
"What is this?!"
Alice looks at you with a mock-puzzled expression. "What, you don't like my gift? Oh well, I guess it doesn't really matter for our deal, does it?" The mischievous look on her face only makes you increasingly uncomfortable. "Well, I suppose I shouldn't keep you in suspense, so here it is. Now that you've got that collar on you, I'm going to let you go. The front gate's open, and you can walk right out. I want you to go and bring someone back here within twelve minutes, and if you do I'll take off that collar and let you go. As for if you don't come back... well, I'd tell you what'll happen, but it'd ruin the surprise and we wouldn't want that, would we?"
By now she's finished untying the ropes holding you down, and you're free to stand. You take a second to try and process what she's just told you, but she interrupts. "Well? You've only got 11 minutes and 54 seconds left, you know. I'd hurry up if I were you."