Pagan, it is my duty to continue to reinforce some of the most prevalent American slangisms so that you may stay up to date. I'm subbed, baby, I'm subbed. For the forum.
When you are departing, or leaving the company of others, you make a Churchillian V for victory sign, hold it at a 45 degree angle, and say, "Deuces. I'm out." This is American for "Farewell."
When you run into an acquaintance on the street, dap him up thusly:
https://www.youtube.com/watch?v=ORC1LwD-hOY
Because we got to fight the power.
When a close friend asks you whether you are still cultivating that divine cannabis, you respond, "Yeah, I fucks wit it."
https://www.urbandictionary.com/define.php?term=i fucks wit it
These expressions will in no way diminish your street cred as a horrible, bloodthirsty, cold-blooded, unpitying Viking; indeed, they will strengthen it.