No, Juan is right. It's not a mnemonic. I don't even know why he brought it up.

Kills ya to agree with me, don't it, Faldage ol' buddy!? Gotta temper it with a little tug...but, hey, that's okay!

I brought it up because it is a memory triggering phrase similar to a mnemonic.

So, again, is there a term for a phrase used to trigger memory that isn't a mnemonic?