Male Anatomy as a Metaphor

My wife just said the funniest thing I've ever heard come out of her mouth...

Everyone who knows her beware! She just said:

"I just want to tell people to sack-up all the time!"

I spent the next five minutes rolling on the floor laughing. I can totally see Julie's grandma saying the exact same thing if she knew that expression and weren't bothered by the obscenity.

Julie's vulgarity-laden righteous indignation is so freaking hilarious that it might kill me!