Anybody Want To Help With A Practical Joke?

Several of the girls in our office here are planning a mom's weekend at one of our bigger houses. Some of the guys (and a couple of the girls who have to work) are thinking about playing a practical joke on them. Anybody have any ideas? We were thinking along the lines of a male stripper calling the house, asking for directions, but none of us could do it because all the women there would recognize us (or even hiring a really BAD stripper show up at the door -- I'm sure I could get some money from folks here to pay somebody for that). Anybody up to the task or have any other great ideas? E-mail me (jake at orty dot com).