A Sad Snake Riddle

I've been working cleaning animals from our local oil spill. Since we must keep quiet around the animals so they don't get stressed, laughter (especially mine, which gets a wee bit loud sometimes) is not allowed. So it's been quiet, quiet, and serious.

Here is a sad riddle for you:

Question: When is a snake slimy?

Answer: When it is caught in an oil spill. (Because, as we all know, snake skin is normally really smooth and not slimy at all -- at least if you stroke it from head to ... er... end.)

WAIT A MINUTE! That wasn't clean humor, that was dirty humor.

(I promise when I can laugh out loud again, I'll start re-posting.)