皆さんお元気ですか?/Minna-san ogenki desu ka? = A general "How is everybody?" greeting; you don't really expect a response beyond something like, "I'm fine, and...
殺す時間 /ko ro su ji kan/ means 'time to kill'.
In writing, you may say something to the effect of "minna e."
'Kanojo o sawattara (ore ha) kimi o korosu.'
How do you say all the kinds of kicks in japanese