grow a set 

sarcastic comment, insult; implies "grow a set of breasts" or "grow a set of balls";hurled at someone past puberty but implies they have not grown intellectually or physically

Garth, grow a set or get lost, this is a man's game.

Sarah, grow a set, either take off your clothes or go home.

grow a set by Jake March 2, 2004

Grow A Set 

To "man up" and grow some testicles. (Not Literally)

Lyrics from Jay-Z's Death of Auto-Tune song...

"Put your skirt back down. Grow a set, men!"

Grow A Set by verysickman33 July 12, 2009