If you're ever pulled over and a cop starts with the SFSTs, never respond with this statement. In the report, the cop will say something like: "Mr. Erictank admitted to me that he was intoxicated and that he couldn't perform the Standardized Field Sobriety tests." They interpret such a statement as "I could not do that test if I were sober, which I am not now."
I'm not saying it to a cop while pulled over on the side of the road, am I? In such a case, I'd probably say something like, "I still sing the song in my head to determine letter placement - what makes you think I could do so backwards? If you have another field sobriety test you can administer, I'd be perfectly willing to try that. For that matter, why not use your breathalyzer, that ought to clear this right up in a few seconds." If I have to, I'll accompany him to the station for a test there, but I'd really prefer not to if there's any other reasonable choice, and he's giving me a ride back to my car afterward (because if he thinks I'm safe to drive my own car there, he must not actually believe I'm drunk).
That's what i would have thought, but they still seem like really random choices. If i did it, all of them would be at least 2 syllables, for one.
Only ones that aren't are Golf and Mike, both of which are pretty unequivocal. It's solely about whether you can determine what letter is being said without fear of mistake (as opposed to phonetic pronunciation of the letters, ay, bee, cee, dee, eee - so many very-similar sounds, easily mistaken). The military-"phonetic" alphabet, as I learned it in boot in 91, prevents any confusion.