Girl Stinky confuses me. (spoilers)
 

In the last episode of Season 2, Sam and Max watched Girl Stinky turn into a cake. They had to get a rib from the monster to turn her back into a person. Well then in the last episode of season 3, it is revealed that Girl Stinky wasn't really a cake. It was all a way to trick Grandpa Stinky into giving her the diner in his will. This is my question. If the cake story was just a trick, how was Sam and Max able to turn the goldfish into a cake and trick the Soda Poppers?

I don't think it's *meant* to make total sense. Anyway, why doesn't Sam recognise Buster Blaster if he built him? What is this, a "Star Wars" prequel?!

The whole Girl Stinky story is explained in depth here.

Mermaids can turn into pastries at will, everybody knows that.

Of course, a cake technically isn't a pastry, but Telltale has publicly apologized for that gaping plot-hole enough as it is.

Bringing it up again is just rubbing salt in the wound, man.

Well she knew about the recipe which is real but just wasn't actually the cake
It was just that the recipe actually creates a cake just not Stinky

Because the cake recipe was real and actually makes a cake. Hence why what Sam & Max made was a cake and not a person. Girl Stinky was just conning Stinky into thinking his cake had turned into a person.

I actually enjoyed that surprising plot twist, because it suits to the nature of Girl Stinky character. Most of season 2 and 3 you'll never know exactly what's the truth and what's she up to.