It is probably more important to learn how to greet people in Lithuania before you learn to cuss at them so here are a list of phrases to use in greeting people.
Labas – Hello
Kaip einasi? (informal) – What’s up?
Kas gero? (Informal) – What’s up? i.e. Kas gero player?
Kas naujesnio? - What’s going on?
Kaip laikaisi? or Kaip tu laikaisi? – How are you?
Good luck greeting peoples.
– EDIT (Thanks Snobas for catching that mistake!)