This episode took over 2 years to make.
The first of 2 episode appearances of Lego Simpsons. The other is briefly in Treehouse of Horror XXV (2014).
Likely because of this episode The Simpsons became a playable level on LEGO Dimensions.
AMFOP (Adult Male Fan Of Princesses) is a parody of AFOL (Adult Fan Of Lego).