Speaking of English expressions... this cartoon produced in 1951 was meant to illustrate colloquialisms, sayings and expressions in English. Some of them may be typically American though.
For what I know, Avery's idea was also to introduce outsiders to new expressions of that time that could be difficult for older generations to understand. But maybe some of these so-called new expressions ot the beginning of the 50s have now turned obsolete?
I remember an American girl telling me "Feeling groovy" was old fashioned (and that was 30 years ago!)