A line, said by Philocetes, in Disney and Square Enix's PS2 game "Kingdom Hearts II" when you are fighting the Hydra Boss in Olympus Coluseum. The line has gained infamy since Phil shouts it several times before Sora can actually do what he's saying.
You feel a sharp stabbing pain while in the water. You look down and exclaim "Argh, a sea gnome!" Your- in all likelihood unstabbed- friend should then procede to point out "No man, see the oxygen tank? That's a Hydro-Gnome."
The look of extreme pleasure after smoking extremely tasty, or powerful, hydroponic marijuana. Usually consists of wide open red eyes, accompanied by a wide grinned smile, and soon followed by a look of ultimate relaxation.
After smoking that Blueberry Kush, I had the Hydro Glow. People could see for miles around that I was tore up.
The offspring of a hydra and dragon, although this is very unlikely (more like impossible), some people are deluded enough to think that this kinda species can exist!