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15.
Taking a shit using a public toilet without using a disposable, paper toilet seat cover.
JD (on cell phone): Where you at?
Gio: I'm taking a dump, bareback, inside the club's restroom.
by sucka_mc April 15, 2010
 
16.
vaginal penetration sex without a condom barrier
She told me that she had passed thru menopause, a whole year without a period, that I needn't use a condom. I mounted her slowly, getting further in by an inch with each thrust. "oh, this is my first bareback sex in 15 years, she said langorously. Fuck me, John, come for me.
by John R. December 08, 2003
 
17.
To have anal sex with a large "horse-like" woman, without a condom
Damn girl your sister-in-law likes it bareback
by Whitdizzle March 20, 2008
 
18.
Whilst trading futures contracts, trading a spread or outright contract unhedged.
I just got out of my September hedge so I've holding these Junes bareback.
by pnoy008 February 23, 2005