Two me are hiking in the woods, they find a hole and decide to see how deep it is, they throw a rock in, but they can't hear any thing, so they throw a bigger rock in, and still can't hear it, so they finally pickup a log and throw it in there and they hear thunk! All of a sudden a goat comes running out and jumps in the hole, they look at eachother shrug and walk on, they meat a goatherd who asks him if they've seen his goat, they say the onlt goat they saw was the one who jumped in the hole.
The goatherd says; "That coudn't be my goat, my goat was tied to a log.