What is Jack-up?
1.
To jack-up is a gymrat term for working to improve a specific muscel or set of muscels, especially women who want to firm-up their butts.
She is doin something to jack-up that ass. I'll bet she spends an hour-a-day on the stairclimber."
See
Random Words:
1.
A period where one is without insurance, i.e. your health, well-being, and/or investments are solely your risk
I was fired from my job ..