The term used to describe something so awsome, so truly bad ass that it could have only come from America
"wait, you mean to tell me that they pay you to go to bars and sample beer. And you get to drive a company Sports car?"
"Thats Fucking America"
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Also See: Chuck Norris
In this context fucking up is when you keep fucking people out of your league just to better your own position financially or socially ... a form of gold digging or social climbing based on sexual relationships .
Juanita keeps chasing after all the doctors in that medical practice where she is working , married or not , by enticing them with sexual favors ....she’s fucking up .