Watch Here: misshotz.com for Thessa’s Facebook 16 Party in Hamburg Exclusive Video! German girl Thessa's 16th birthday party crashed by 1500 people. Eleven people were temporarily detained, one police officer was injured, dozens of girls wearing flip-flops cut their feet on broken glass and firefighters had to extinguish two small fires at the 16th birthday party in Hamburg. Facebook, Birthday Party, Thessa, Facebook Birthday Party, Out Of Control, Out Of Hand, Germany Facebook Party, Thessa Facebook Party, Weird, Hamburg, Berlin, Germany, Technology, Entertainment, Riot, News