euphemism
委婉语

die 去世
go to heaven
six feet under
He is six feet under.
他去世了。

kill 杀死
put it down
put it to sleep

WC, toilet 上厕所
go to the bathroom
restroom
lavatory
washroom
the little boy's room
the Ladies room
the men's room

unemployed 失业
out of work
between jobs

homeless 无家可归
on the streets

sex 性
the birds and the bees
do one's taxes
Hanky Panky