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Come in mouth, how it differs from the terms around it, and why it is an offer to ask about.
Last checked October 2026
CIM stands for “come in mouth”. In an escort advert it means the escort is willing for the client to finish in her mouth. It is an extra that many escorts do not offer, and like every listing it is an offer and not a promise.
What it means in an advert
A profile that lists CIM is saying it is available. It is the escort’s choice on the day, and it is nearly always listed with oral sex. It is separate from swallowing, which is whether she swallows afterwards, and from COB, which is a finish on the body.
CIM, swallow and OWO
CIM is a finish in the mouth.
Swallow is whether she swallows. Few escorts offer it.
OWO is oral sex without a condom, which is a different question.
Agreeing it
Ask before the booking, in writing if you can.
Accept the answer. A no is final.
Never assume that one extra implies another.
Health
Oral sex can pass on infections including herpes, gonorrhoea, chlamydia and syphilis, and contact with semen adds to the risk. A condom lowers it. Regular sexual health checks are sensible, and they are free and confidential at NHS clinics. See the full shorthand guide for the rest of the vocabulary.
Common questions
What does CIM mean?
Come in mouth. In an escort advert it means the escort is willing for the client to finish in her mouth. It is an offer, not a promise.
What is the difference between CIM and swallow?
CIM is a finish in the mouth. Swallow is whether she swallows afterwards, which few escorts offer.
Is CIM the same as OWO?
No. OWO is oral sex without a condom, and CIM is where the finish happens. Each is a separate extra.
What are the health risks?
Oral sex can pass on infections including herpes, gonorrhoea, chlamydia and syphilis, and contact with semen adds to the risk. A condom lowers it.
What does OWO mean?
It depends where you saw it. Online and in chat, OwO is an emoticon, a wide eyed face showing surprise or excitement. In escort listings and some dating profiles, written in capitals, it stands for oral without a condom.
18+ For adults only. This site publishes guides, definitions and London market figures. It does not arrange bookings, and it does not speak for anyone.