“My tailor is rich is the first sentence of The English Without Pain, the first work of the Assimil method of learning English, written by Alphonse Chérel in 1929. This sentence was created using transparent words (tailor> tailor, rich> rich) to facilitate the beginning of learning.
It has been parodied and repeated many times, for example in The Bald Soprano, Asterix at the Bretons, Le Petit Nicolas (story “Djodjo”) or The Gendarme in New York and the Exorcist but it is also used in aviation for the same reason for parody. Since then, Assimil methods have evolved, but this phrase continues to be used in everyday language to evoke the learning of English.
Such references are tinged with humor, because this sentence is difficult to place in a conversation.