[Pseudonym]

Two adventurers are out doing adventurerey things and as they're walking along they come upon a huge hole in the ground. They approach it and are amazed by the size of it. Dragon? Purple Worm? Tarrasque lair? The first adventurer says,
"Wow, that's some hole. I can't even see the bottom. I wonder how deep it is?"
The second adventurer says,
"I don't know, let's throw something down and listen and see how long it takes to hit bottom."

The first adventurer says,
"There's this big boulder here, give me a hand and we'll throw it in and see".

So they pick it up and carry it over, and count one, and two and three, and throw it in the hole.

They are standing there listening and looking over the edge and they hear a rustling in the brush behind them. As they turn around they are just in time to see a horse come crashing through the brush, run up to the hole with no hesitation, and jump in headfirst.

While they are standing there looking at each other, looking in the hole, and trying to figure out what that was all about, a paladin of Toran walks up.

"Say there", says the paladin, "You fellers didn't happen to see my steed around here anywhere, did you?"

The first adventurer says,
"Funny you should ask, but we were just standing here a minute ago and a horse came running out of the bushes doin' about a hundred leagues an hour and jumped headfirst into this hole here!"

The paladin exclaims ...
"Why that's impossible, I had him tethered to a boulder!"