How do you make cake without eggs or milk?

Well, just wondering. I know that's far from the worst "mistake" in this film but it caught my attention.

Actually I kind of enjoyed it, especially the "popcorn" scene and all the cheesy '80s music.

I've been trying to figure out how much in royalties the producer would have had to pay for use of all the copyrighted material thrown into this film that any "real" film would have to pay just to use ... for instance, the daughter was wearing a Garfield shirt in one scene, the son had a Batman poster on his wall. There were others but I'm tired and need to rest after watching this thing.

Little crap like that actually costs money to put into films. That's why most films go out of their way to avoid using real world products (unless they are specifically paid to use them as product placements)