In some male mammals, the<unk>  is a protuberance of skin and muscle containing the testicles. It is an extension of the abdomen, and is located between the penis and anus. In humans, and some other mammals, the base of the<unk>  becomes covered with pubic hair at puberty. In common speech, the<unk>  is often improperly referred to as the testicles, which actually refer to organs encased inside the<unk> . The<unk>  is homologous to the labia majora in females. In slang, the<unk>  is often referred to as the "nut sack."
Scrotum
Callus
Ovary
Clitoris
Hymen
Papaveretum
Mammary gland
Genital tubercle