The funniest part by far was Homer explaining the Birds and Bees to Bart who then screams, runs to Milhouse's house, both of them scream, they run to their friends houses, more kids scream, and so on and so forth.
The end where James Cann was gunned down like his character in the "The God Father" was also funny considering it was by a bunch of Kletus's Slack-jawed Yokel brethren
I also thought that the kitchen taking two years to be finished was one of those things where they bend time and create an alternate reality in that you know the kitchen will be back to normal in the next episode
