Tongue kiss
A French kiss (or tongue kiss) is a romantic or sexual kiss in which one participant's tongue touches the other's lips or tongue and may enter their mouth.
While family members may sometimes kiss on the lips, a tongue kiss almost always indicates a romantic or sexual relationship. French kissing stimulates the lips, tongue and mouth, which are all areas very sensitive to touch. It is considered by many to be both very pleasurable and highly intimate.
In a tongue kiss participants may exchange saliva, which would be considered disgusting in other contexts, but which may add to the frisson of the sexual kiss. Although most sexually-transmitted diseases are not transmitted by kissing, the exchange of saliva in a French kiss may increase the chances of catching an orally transmitted disease.
French kissing is sometimes referred to in literature as a soul kiss or a columbine kiss (columbine meaning like doves). It is known colloquially as tongue wrestling, tonsil hockey and, in the United Kingdom, snogging.
Unlike other English terms using the adjective "French," the expression has been borrowed into colloquial French as the verb frencher.
Maraichinage
A possible predecessor of the term tongue kiss is the Maraichinage, popularised by the residents of Pays de Mont in Britanny: the Maraichins. A maraichinage often lasted for several hours, and involved a profound exploration of the mouth of one's partner.
French Kiss is a 1995 movie starring Meg Ryan and Kevin Kline.
Deep Kiss is a series of Japanese pornographic lesbian movies, dedicated entirely to French kissing.
