Finding the right term can be confusing. Here is a partial*** list of terms and their very straight forward and easy to understand definitions.
69: Sex position in which 2 sexual partners lay head to toe and mutually perform oral sex on each other.
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BBS: Bare back sex, sex without a condom.
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BBFS: Bare back full service, oral and penetrative sex without a condom.
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BBBJ: Bare back blow job, oral sex without a condom.
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BBBJTC: Bare back blow job to completion, giving oral sex until the receiver cums.
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BJ: Blow job, oral sex on a penis.
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BJTC: Blow job to completion, giving oral sex until the receiver cums; with a condom.
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BLS: Ball licking and sucking
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CBJ: Covered blow job, oral sex with a condom.
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CS: Covered sex, sex with a condom.
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CIM: Cum in mouth, cumming in givers mouth without a condom.
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COF/COB: Cum on face/cum on body, cumming in givers mouth or on chest, face, back.
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DATY: Dining at the ‘Y’, oral sex on the vagina.
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Facial: Ejaculating on givers face.
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Filming: Filming or recording of sexual acts.
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FK: French kissing, kissing with tounge.
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Foot fetish: A sexual desire and gratification focused on feet or shoes, may involve a foot job or kissing and licking of toes.
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Foot job: Similar to a hand job but performed with feet.
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FS: Full service, full intercourse.
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GFE: Girlfriend experience
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GS: Golden shower, urinating on body or in mouth.
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HJ: Hand Job, giver uses their hand to rub the penis of receiver.
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MSOG: Multiple shots on goal, multiple orgasms within an encounter.
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OWO: Oral without, blow job without a condom.
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PSE: Porn star experience, no condom.
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Russian: Rubbing the penis between breasts, sometimes until climax.
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Toy show: Masturbation show using sex toys.