John came back from a safari in Africa. Upon arrival, he went to his friend, Mark, and told him of his adventures.
"I was out in the jungle," he said, "when all of a sudden I heard a noise in the bush behind me. Looking back, I saw a huge lion, licking his chops and smiling at me.
The lion started coming my way and I started running, with the lion not far behind. When the lion was almost at my neck, he suddenly slipped, and I got ahead a bit.
The lion started gaining on me again, and as he got closer, once again he slipped. I happened to see a house not far away, so I made toward it. I got close to the house with the lion almost on top of me when he slipped for a third time.
With my very last bit of strength, I ran into the house and closed the door in
the lion's face."
"That's some story there, John. I would have crapped in my pants."

"Well, what do you think the lion kept slipping on???"