grow a sack

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!!"

by Bleeorg December 22, 2003

Why don't you grow a sack and do it, Laddie?

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?

by Swagger-2094 July 21, 2011