What is the fascination with my forbidden closet of mystery?

It's the episode where Bart is forced by Marge to play with Ralf. He find it cool when Ralf stoles his father pass key. Here, They entered a toy shop and start playing with everything they can

my key 🥺

Marge sets up play date with Ralph. The master key, Ralph wets his pants and returns as a hero. He uses his dads master key to stop the electric chair.