The phrase "make up top of one head" is often used to refer to something that is improvised or done without any prior planning or research. The spelling of this phrase can be broken down into its individual phonemes, using IPA notation: /meɪk/ /ʌp/ /tɒp/ /ɒv/ /wʌn/ /hɛd/. This indicates the sounds that make up each component of the phrase. While the spelling may seem unusual, it accurately represents the way the words sound when spoken aloud.