The vagina also fanny (slang), and cunt (slang, offensive) is part of the woman’s internal genitalia. The vagina is like a tube that goes from the inner labia to the womb. It is the shape of a flattened tube and is from ten to twelve centimetres long in an adult woman, but it is also very elastic. The vagina can stretch to make room for the man’s penis during intercourse, and during childbirth the vagina stretches so much that the baby can come out through it. There is no need to worry if it is too small or too big, as it is so elastic. The vagina can constrict (become smaller) or enlarge so that it suits the size of the man’s penis. This is why the man does not have to worry if his penis is big enough.