The spelling of "ahhing" can be explained using the International Phonetic Alphabet (IPA) transcription system. The word is pronounced with a long "a" sound followed by two short "i" sounds, making it sound like "ah-ih-ihng." This is represented in IPA as /ɑɪɪŋ/, with the "ɑ" representing the long "a" sound, the "ɪ" representing the short "i" sound, and the "ŋ" representing the sound at the end of the word that is similar to the end of "sing."