It most likely means to stop seeing someone abruptly.
Someone is coming
It means to call or email someone.
Someone from their own home town.
Behind (something/someone)
if means you killed someone while you where in prison
Backstabbing = Talking about someone or doing something behind their backs. You can lose friends that way.
bust can either mean a behind of a person or a sculpture of someone's body (shoulders and up)
The phrase"Drop the pilot" can be applied to any situation where someone feels he knows enough to manage by himself and can discard his mentor.
usually a tear drop tattoo symbolizes that you've killed someone
It's like a drop kick except they headbutt you in the 'nads
To attack (someone) unfairly, especially in an underhand, deceitful manner. To tease someone behind their backs or when they aren't around.
back bitting You might mean talking behind someone's back, and ways to describe that are gossiping, criticizing, "talking someone down," or "dissing" someone... could be betrayal or subversion as well. If you mean actually just standing behind someone and talking, then perhaps grumbling or murmuring or ... being passive-agressive. Often, the term "two-faced" is used to describe a person who talks poorly about someone behind their back, while acting like their best friend while in their presence.