Re: What word(s) do you use to desigante ..
Yes, Angel.
Apparently, my mother-in-law uses the word 'tuppence', but not in my presence (where she doesn't talk about such things).
For me, it depends to whom I am talking.
In 'polite' mode, the words would be 'willie' and 'backside' (or 'bottom' if talking to the Queen).
With the lads, it's 'dick' (as in the London Police Commissioner) and 'arse'. Of course, I wouldn't use such words in front of ladies - even the ladies on here. Er... sorry ladies.