Oral without a condom refers to a blowjob that is performed on a bare penis. It can be assumed that the "oral" being referred to is a blowjob because of the use of the word condom. A dental dam would be used in reference to cunnilingus.
Oral without a condom is a term that might be employed in the context of sex work, specifically by an escort. The acronym OWO may be used to communicate that oral without a condom is a service that is available. Likewise, a client may use the term when inquiring as to whether the service is available.
