vibe assassin
one who, through social awkwardness or overall douchiness, is able to eradicate the good-time party feeling from a room instantly.
Don't invite that guy. Last time he totally killed my buzz -- he's a vibe assassin.
Vibe assassin
People that kill your vibe for no reason. Buzz killers. Kill joys. Hating ass muhfuckas.
Don’t invite Keith to the party he’s a fuckin vibe assassin. Always on bullshit.