It's just a completely pointless scene the writers put in for reasons even we can't fathom. At least it has spawned a meme for itself. The Big Lipped Alligator Moment Meme! The rules are simple.
1. A scene that comes right out of nowhere.
2. Has little to no bearing whatsoever on the plot.
3. Is WAY over the top in terms of ridiculousness, even for the context of the movie.
4. When it's over, no one ever speaks of it again in public.
I'm sure you'll find more if you look.
In all honesty, I don't know why the writers did that. No one does. Just do your best to enjoy it's madness, even though you probably won't.
