After doing the Quest chain that ends with “The Thirsty Goblin” in Tanaris with Marin Noggenfogger you are rewarded with x5 Noggenfogger exlirs. When you drink it it gives you one of three effects.
-Slowfall for “12” seconds.
– Shrinking you for “10” minutes.
– Turning you into a Skeleton Form for “10” minutes,
But did you know that the Buffs you get can stack? You can keep drinking the Noggenfogger untill you get both the Shrink Buff and the skelly buff. So my alt Zophina got to run around as a Mini Skelly. After completing the quest you can then buy unlimited supplies from him…
and then because I felt like doing a tour – I dragged a friend out of the bank and Went to Iron Forge
and then did a very good job at hiding in the bushes in Stormwind
and then finally off to Shatt
Provided by 
Pugnacious Priest's Warcraft Blog 
*grins* If you’re in Skelly form you don’t have to breath, so you can go tromping about in underwater adventures. At least, that’s what I remember from last time I played with it. ^^;
I love Noggenfogger. :3 My shammy friend used to explore with it. Jumping off high places == awesome.
mmm that explains a tip I read once about guarding the flag in WSG… you are sooo small, that the enemy wont see you while you are grinding them to a pulp.