What does barely legal mean in gay porn?

What is barely legal?

Descriptive used in conjunction with 'twinks' or 'guys' who are eighteen years of age or just barely over that age.

Definition

Depending on one's interpretation, most generally accept that 'barely legal' is a reference to males who have just achieved the age of eighteen years and a term mainly used in porn.

In some instances, it refers to those whose appearance looks like one who is just eighteen, though they may be older, such as being nineteen or twenty years old.

The reference is to punctuate that the men being depicted are of legal age, to be shown having sex, or being naked.

Also refers to a popular pornographic magazine, that specializes in showing eighteen year old girls.