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3.
When someone is being stupid and says stupid shit to something awesome you said.
Jorge- "I'm totally gonna be the president."

Mac- "No, you're Mexican."

Jorge- "How about I don't want any of your GODDAMN BACKSASS?!"
by TreyyyCasen March 25, 2010
 
1.
To respond with extreme attitude to an authority figure. Act smart alecky to a request or demand
Yes SIR, right away SIR, anything for you SIR
by bbobk December 10, 2004
 
2.
back talk, woffin'or talkin' trash
"Give me any more of that back-sass and I'll kick your ass."
by hoobaju May 02, 2005