Women who have had sex with the same man or men. The more men whom they have each had sex with, the closer the bajingo bond. The male version of this is called the weiner cuz. Note that bajingo sisters that have participated in threesomes or moresomes are especially close. Acknowledgement of bajingo sisterhood is often preceded by some degree of jealousy in one or more parties.

As seen on the TV show Scrubs.
Kim: Elliot, you're sleeping with my ex-boyfriend!
Elliot: Well, same goes for you!
Kim: Whoa!
Elliot: Yup. We're bajingo sisters.
*they make out* <-- Note: this may or may not occur.
by zeeroid April 23, 2009
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a female who is particularly nasty, especially when it comes to her personal or sexual hygiene. Also a female who is known to be a slut, or who has been known to have toilet paper in her vagina.
"have you met Brian's new girl?"
"yeah, she's a total dirty bajingo"
by TimeRacer March 12, 2010
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Bajingo Lingo is how the vagina attempts to justify sleeping with someone a woman usually wouldn't sleep with when her judgment isn't compromised by booze, horniness, or long sexual dry spells. Can occur either drunk or sober and can be in the form of either rationalization or pleading.
"Sure he's ugly, but he's really into you." "Oh God, you are SOOOOO horny." "Oh come on, it's been 6 months since you've been laid." "Everybody is beautiful in the dark." "Please, sister. Like you have any better offers?" "Is this a mistake or is this just Bajingo Lingo?"
by &rea September 3, 2009
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Hey Jen, want to hit the bajingo parlor later tonight? We can pick up your paycheck.
by T-Racy and Chim Chim April 25, 2007
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Two girls that have had sex with the same man.
-I just had sex with J.D.
-Really? I had sex with him last week! We're totally bajingo sisters!
by mayadizzle April 23, 2009
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Air escaping from the vagina during sex/exercise
I bajingo-bombed during yoga!
by KatieCambo June 14, 2011
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