I will be traveling to Sweden next month, mostly in Stockholm, and while there I was hoping to get some massages.  Some friends have warned me that the anti-prostitution laws in Sweden are so strict that a customer can be arrested for even implying that they would be willing to receive a happy ending after a massage.  Is this true, or are my friends teasing me?  How can one tell the difference in Sweden between a "legitimate" massage parlor and one that offers happy endings (or more)?