Sex Glossary: G
genital warts; human papillomavirus; HPV: Sexually transmitted disease; sometimes linked with cervical cancer; not curable but a vaccine exists.
glans: The head of the penis.
gonorrhea: Sexually transmitted disease; curable with medication.
group masturbation; circle jerk: Mutual masturbation in a group, wherein each person uses masturbation methods to sexually pleasure a different person.