No, they didn't invite everyone from their high school graduating class, just the ones who met the criteria: hot, attractive, unattached and very horny. There were more guys than girls but no one complained, it all would work out even better than expected and they hope it doesn't rain, there's just so many beds inside. And you're invited to come along, too, better be ready for a lot of sex. A very dirty time is planned to be had by all and you're being invited.