No the womb is. The mouth is filled with billion's of bacteria's.
Mouth
The dog's mouth is not the cleanest place on earth because it has a lot of bacterias and the lick the part were they pea.
The same part that is the cleanest part of a man. Genitalia are, as a rule, full of natural bodily excretions. Which would mean that gender would not be relevant to the cleanest body part.
a dog actually has the cleanest mouth
For cat? head :P
The mouth.
The penis is the cleanest part of the body, with the overall loswest bacterial count. The cornea of the eye is the next cleanest part.
The vagina is the cleanest part of a woman's body. The vagina is a self-cleaning organ so it cleans out dead cells and has an acidic pH to kill harmful bacteria. As long as the vulva has been cleaned and there is no vaginal infection the vagina is very clean.
Dog
A pig
The softest part is most likely the brain. It is the part that is most changeable due to external influences, and so, it is the "softest".
There is no part of a man's body that is considered the cleanest part of his body. The cleanliness of a man depends on the personal hygiene of the man.