Gay sex
From wipipedia.org

Gay sex Is used as something of a catch-all phrase to refer to any sexual activity between two men, most commonly refering to anal sex.
While often used by the general public to refer exclusively to anal sex, it should be noted that a great many men who identify themselves as gay do not in fact participate in anal intercourse, perfering instead any number of alternative sexual activities such as
or any number of other sexual or fetish activities.