Luckily when I stopped working the Jungle Cruise I haven't heard too many of my original jokes. The two that use to get the biggest laughs were:
Hippo Pool: "Look! There's one hiding up in the trees!" BANG BANG. "I think I got him"
Native Village: "Let's find out why the natives are jumping around" make it seem like I was communicating then come back to the mic. "Well, looks like Mongo lost the key to the restroom again last night and they haven't found it yet."