When my daughters were kids we watched a Bugs Bunny/Yosemite Sam cartoon in which Bugs has to go retrieve a sword from The Black Knight (Sam) who rides a fire breathing dragon. The dragon goes well, but doesn't stop nearly as well, so Sam is always screaming "Whoa Dragon." Whoa Dragon became our shorthand phrase for any situation that was out of control.
Fast forward a bunch of years and my older daughter had her son, my first grandson, using "Whoa Dragon" when things were getting out of control. So, I went out and got a "WOA DRGN" license plate for my truck (PA only allows 7 letters so it was the best I could do) and became a "dragon rider." My avatar is only slightly goofier than Sam's dragon.
On an only marginally related subject, JDog, Killdeer is right. You'll never have another JDog but the rules do allow more than one really good dog. Of the 8 dogs I've had in my lifetime, 5 have been (and fortunately for me three still are) great. They've all been different, but all great.