I need help finding an episode!

What's the episode or clip where a man is trying to solve some sort of problem, and he does this by drawing strange connections between random objects in the room. For example, he says something like: baseball, baseballs are round, round like Randy's cheeseburger belly, belly, like jelly bellys. I know that's an awful example, but hey I am just trying to get the point across to find this episode and I can't find it for the life of me, so if someone could help, that would be awesome!