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2.
Grow up ; don't be dumb , basic, childish, etc
Sam:Man I just farted

Bob: dude get your life
by yo54mama October 15, 2013
 
1.
(verb) An expression one makes when someone makes a comment or does something contrary to what you believe is acceptable. This expression has been made popular by Toni Braxton's sister, "Tamar Braxton," on the reality tv show, "Braxton Family Values." --

It's another way of saying, "knock it off," or "Cut it out," and can be short for an expression such as, "Get your life together, because you're obviously going insane if you believe that"
Toni: Tamar, that's why I can't go anywhere with you because you're always acting a fool.

Tamar: Who??? Not her! Nope, you better get your life.com
by Geniusity February 17, 2012
 
3.
have fun; act crazy. wilin' out. crunk
1) I was getting "my life" when that song came on.
2) "If you came to "get your life," tear the fuckin' club up."
by RockDaNew February 12, 2008