Given that the first string is normally the bottom string in the normal dextrocentric manner of holding the instrument (some levomanualists restring their axes but they'd really have to completley rebuild it due to the fudging of the bridge common among most fretted string instruments, but that's a whole nother story) you now have to tune your mnemonic backwards. Given "fleas" you have to backstep to "has fleas" and "dog has fleas before getting to "my dog has fleas". No, you need an entire nother mnemonic to tell you that the first string is an A and what if you have a baritone uke? You don't have an A string. On the concert (e.g., soprano) uke your mnenonic is telling you that the first string is an F and your third string (the C string) is a D. No, Juan is right. It's not a mnemonic. I don't even know why he brought it up.

I remember reading somewhere what the thang was with H being our B but I don't remember what it was. I'll race you to the google line.