Kills ya to agree with me, don't it, Faldage ol' buddy!?

Well, if you're gonna be that way about it, mebbe it is a mnemonic.

See http://www.bartleby.com/61/76/M0357600.html.

All it says is A device, such as a formula or rhyme, used as an aid in remembering.

The lovely ASp knows a zillion of them that aren't in any way initialisms. Onliest one comes to my mind is "It's a bird, it's a plane, it's a Mozart." No wait, "Oh, Mozart's in the closet! Let him out! Let him out! Let him out!" both to tunes from Mozart pieces and used in what were once called drop the needle tests in music appreciation classes. In both these cases the tune is supposed to bring to mind the lyrics, which is liable to be the case with your flea-bitten dog, too.

My mnemonic for remembering pi to 35 decimal places is also not an initialism. My two rats leap no jelly meal fopcap, my name for John Shar's mama famine kitchen police. Luzon Fifi... But it does use letters to connect to what I am trying to remember.