A German teen identified only as Thessa got the shock of her life when a Facebook invitation to her 16th birthday party, meant only for a small group of family and friends, went viral after she forgot to mark the event as private. More than 1,500 German youth showed up to the girl's home over the weekend—but Thessa had gone into hiding.
Her parents had her cancel the party and hired a private security firm to patrol the house after learning that 15,000 people confirmed they would attend. Ten percent of those RSVPers still showed up—with presents, cake, booze and signs reading "Where is Thessa?"—along with around 100 police officers, some of them on horses. One cop was hurt, 11 people were briefly detained, and a number of girls in flip-flops cut their feet on shards on glass, reports the AP. (Similar incidents have been reported in the past, like this one.)