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."
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a subculture term for wearing steeltoe boots such as doc martens or gripfast, and wearing with suspenders.
most known by the punks and ..
1.
when a man is having sex, and misses that girl's asshole, stabbing her buttcheek with his penis and fractures it, and screams
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