more polite words.
let me tell you all vulgarities were once non-vulgar words
referring to some other objects, and then when the meaning
changed to "vulgar" over time, a "more polite word" takes
over it's place as a more common usage, until one day again
the "more polite word" has turned "vulgar" again, and
"another more polite word" appears to subsitute it's place,
and so, on and on
on and on,
on and on,
on and on, ........
so no need to be so particular one lah