My friends and I discovered a nice little "bug" the other day. We were sitting around Ironforge with nothing to do other than to give a friendly ribbing to our Shadow Priest friend over that fact that she didn't have her Amani War Bear yet. We had our Mojo's out hopping around the feet of our Bears, trying not to get squished. We found out that if we blew them a kiss, we turned into a frog and our mounts grew quite a bit.
Obviously this is some kind of flaw in the model coding that allows this, but it's a fun enough and harmless enough bug that I can't stop myself from doing it every chance I get. More so, drink some Winterfall Firewater and pop Heroism for a real big frog on a bear mount.
This is definitely hilarious enough that I suggest everyone goes out and tries it at least once. Just leave my Mojo alone. He's spoken for.