== A euphemism is the substitution of a polite term for one that may be offensive.
It's a euphenism for sexual intercourse
Euphemisms are mild or indirect expressions used to replace harsher or more direct terms. Examples include "passed away" for "died," "let go" for "fired," "adult beverages" for "alcohol," "between jobs" for "unemployed," "downsize" for "lay off," "visually impaired" for "blind," "big-boned" for "overweight," "senior citizen" for "old person," "correctional facility" for "prison," and "expecting" for "pregnant." These phrases soften the impact of the original terms and make discussions around sensitive subjects more palatable.
idioms are common phrases or sayings that cannot be understood by these individual words or elements. euphemisms on the other hand are the alternative way to say a certain word. example: garbage man-sanitary worker