The question isn't whether it's plausible or not-- this is Indiana Jones, after all. The question is whether it worked in the movie. The whole scene is bizarr

The question isn't whether it's plausible or not-- this is Indiana Jones, after all. The question is whether it worked in the movie. The whole scene is bizarrely out of place and is making light of something that most people don't think is really all that funny. In a similar vein, there's nothing wrong with funny characters necessarily, but there is something wrong with Jar Jar.