The spelling of the word "tost few crumbs" has led to some confusion due to the irregular use of letters. The correct pronunciation of this phrase is /təʊst fjuː krʌmz/, with the "o" in "tost" being pronounced as a short "o" sound, and the "u" in "few" also being pronounced as a long "u" sound. The "w" in "few" is silent, while the "s" in "crumbs" is pronounced as a "z" sound due to the following "m" being a voiced consonant.