I don't really know how the GP thinks it applies, but a big lipped alligator moment is a term that originated from a review of the movie All Dogs Go To Heaven a

I don't really know how the GP thinks it applies, but a big lipped alligator moment is a term that originated from a review of the movie All Dogs Go To Heaven about a scene that is basically irrelevant to the plot or emotional development of the characters and is literally just a musical number starring a big lipped alligator.