Jack-up

What is Jack-up?

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 firm, hard, buffed, hard body, spankable, assilicious

Bukkake Block

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Jack-up Edit Meaning