... but unfortunately I can't remember how I got it. All I can say is that I must have gotten it from some GM event around the year 2009-2011, on the AB server.
It makes you look like an oldschool live Froglok, like the ones from Sebilis or Upper Guk. There are no emote animations (such as /wave), but spell casting and feign death looks just like the NPC frogs.