The term "cum-solo" is a combination of two words - 'cum' and 'solo'. In the context of adult content, it has the following meaning:
Cum: Refers to the act or moment of ejaculation in both males and females. Cum can also refer to semen, the fluid expelled from the male reproductive system during ejaculation. In some cases, 'cum' may represent female ejaculate as well.
Solo: This word means that the act is performed by only one person, without any partner involvement. When it comes to adult content, a "solo" scene typically features one individual engaging in self-pleasure or masturbation, without another person present.
Therefore, the term "cum-solo" refers to a solo scene where an individual engages in self-pleasuring activities and eventually reaches ejaculation (either male or female). This can include masturbation, rubbing, or other forms of sexual stimulation, either by hand or with the use of sex toys.