Symphony in slang" was created by Tex Avery in 1951. This 6'43" cartoon includes a great deal of idioms : you will surely recognize some of them !
At the beginning of the cartoon, a man has just arrived at Heavens' Gates. He speaks a weird language that Saint Peter hardly understands. For instance, he claims that he "was born with a silver spoon in his mouth"!
slang = a very informal language, rather spoken than written, used especially by particular groups of people ; ex : "guy" is a slang word for "man".
weird = strange / bizarre / odd