This is the first Bulgarian meme. On the 29th March 2011 Facebook user Dobromira Ilieva (Dobi for short) created the event "RojdEnniq mi deeeen :P" (My biRthdaaaay :P) with instructions on when and where will her birthday be celebrated. The problem was she created a public event. Within the next 24 hours 40000 people were invited from which 7000 confirmed they will attend. Her account went private after a couple of her public pictures were used in memegenerator. The event was posted on the major Bulgarian forums, there was also a wikipedia.bg entry.
http://www.facebook.com/event.php?eid=212424362108468&ref=notif&notif_t=event_invite

The catch phrase is "my ApArtment is smAll but whEn enOugh peOple gAthEr we cAn go sOmewhEre elsE!"