A fork of Rural Dictionary
Sack refers to the male scrotum in this case. Synonym for "grow some balls" and other similar terms. Meaning: to accumulate or develop the courage or resolve to face a given situation.
"So you like her? Grow a sack and ask her out!" "That's ALL you get paid!? Grow a sack and tell your boss you need a raise!!"
Toughen up, grow up, become more "manly"
Grow some sack, man. Pick out your own clothes and wear whatever the hell you want to!
A phrase spoken with an Irish or Scottish accent, meaning, be a man and get it done.
Guy1: I don't think i can do it. Irishman: Why don't you grow a sack and do it, Laddie?