Tag "male:cousin" means - TWO MALE RELATIVES ARE FUCKING. NO FEMALES. NO DICKGIRLS.
For ANY form of heterosexual incestual interaction - id est, involving at least one male, and at least one non-male - only "mixed:incest" should be used, and only non-male participants tagged.
https://ehwiki.org/wiki/incest
Base +35, frozenoctorok +6, LGain +6, user in a cup +5