The letter M is derived from the Phoenician Mem, via the Greek Mu (Μ, μ). Semitic Mem probably originally pictured water. It is known that Semitic people working in Egypt c. 2000 BC borrowed a hieroglyph for "water" that was first used for an alveolar nasal (/n/, because of the Egyptian word for water, "n-t". This same symbol became used for M in Semitic, because their word for water began with that sound. The letter M represents the bilabial consonant sound, IPA: [m], in Classical languages as well as the modern languages. The Oxford English Dictionary (first edition) says that 'm' is sometimes a vowel in words like spasm and in the suffix -ism. In modern terminology, this would be described as a syllabic consonant
Ideas for M:
My M.. is my M&M's Though I have more ideas and may bust out more than one photo today
PS: we have a photo challenge gallery.. thanks Debbie!!