You could kidnap her! just don't put a jaw breaker in her mouth and shove her in the trunk like on the movie *Jawbreaker* we all saw what heppened there. =/
Make plans with her parents and get some guys or a bunch of girls and put on masks and ski masks and dress all in black or camo and go to her house on the 2nd.. during the night and take her out of her room... (have her mom pack her some clothes and toothbrush and maker up and all.) then blind fold her & tie her hands behind her back and if u want to make it more laughable... (don't forget to have someone holding a video camera for extra laughs and to occupy time at the party later.) then carry her into a car and stuff her in the back seat between two people. (makeup some hand motions or something to keep from her finding out its you if u need to talk to the other people)and then take her to your house and unblind fold her. and invite all the girls to stay over and spend the night and then on the 3rd you can have a co-ed party.. music and a little dancing... junk food.... movies... games like twiser and fun stuff.. spin the bottle...a scavengar hunt in town would be fun too.