pac man effect
when you take something to an extreme and it explodes back like Pac-Man getting caught and then eating the ghost.
I tried to be a morning person and now I'm sleeping through my alarm and my dog's barking at me.
My dad said he'd take me to the zoo and now he's taking me to the mall and eating donuts.
I tried to be rich and now I'm broke and eating instant noodles for breakfast.