bernardo bertolucci's film, last tango in paris, introduced anal sex into the mainstream heterosexual vocabulary
licking (annilingus), touching, inserting, or otherwise playing with someone's or your own anus with the intent of experiencing or giving pleasure (in a broad sense)
"bernardo bertolucci's film, last tango in paris, introduced anal sex into the mainstream heterosexual vocabulary" What is the definition of "anal sex"?