I was looking up a definition online, as I often do, in this case the British slang word tuppence; I got the standard "a slang reference to a coin denomination" definition from Wikipedia, but stumbled on these interesting ones given at The Urban Dictionary:
Olden day word for a little girls [vagina]. Was once also slang word for money in ye olde england.
Fanny wiped her tuppence with a dish rag. Tally Ho.
Another word for a females Vagina.
A man has a winkle and a woman has a tuppence.
On one hand, those are two presumably independent contributors giving the same definition. On the other hand, you often can't trust The Urban Dictionary on some types of words, especially ones that have sexual meanings, because it's titillating for some people to give outrageous sexual definitions.
Some my questions are: Are the definitions given by these two correct? If so, what's the thinking behind the term?