Making out is a term of American origin dating back to at least 1949, and is used to refer to kissing, including extended French kissing or heavy kissing of the neck (called necking), or to acts of non-penetrative sex such as heavy petting. Equivalent terms in other dialects include the British English getting off and the Hiberno-English shifting. When performed in a stationary vehicle, it has been euphemistically referred to as parking, coinciding with American car culture. History The sexual connotations of the phrase "make out" appear to have developed in the 1930s and '40s from the phrase's other meaning: "to succeed". Originally, it meant "to seduce" or "to have sexual intercourse". "Petting" ("making out" or foreplay) was popularized in the 1920s, as youth culture challenged earlier Victorian era strictures on sexuality with the rise in popularity of "petting parties". At these parties, promiscuity became more commonplace, breaking from the traditions of monogamy or courtship with their expectations of eventual marriage. This was typical on college campuses, where young people "spent a great deal of unsupervised time in mixed company". In the 1950s, Life magazine depicted petting parties as "that famed and shocking institution of the '20s", and commenting on the Kinsey Report, said that they have been "very much with us ever since". In the Kinsey Report of 1950, there was an indicated increase in premarital intercourse for the generation of the 1920s. Kinsey found that of women born before 1900, 14 percent acknowledged premarital sex before the age of 25, while those born after 1900 were two and a half times more likely (36 percent) to have premarital intercourse and experience an orgasm. The Continental zeitgeist is illustrated by a letter that Sigmund Freud wrote to Sándor Ferenczi in 1931, playfully admonishing him to stop kissing his patients; Freud warned him lest "a number of independent thinkers in matters of technique will say to themselves: Why stop at a kiss? Certainly one gets further when one adopts 'pawing' as well, which, after all, doesn't make a baby. And then bolder ones will come along who will go further, to peeping and showing – and soon we shall have accepted in the technique of analysis the whole repertoire of demi-viergerie and petting parties". By the postwar period, necking and petting became accepted behavior in mainstream American culture as long as the partners were dating. A 1956 study defined necking