Batman and Robin (film)/Fridge

Fridge Logic - Anything to do with Mr. Freeze falls in this category.
- Ahaha. Fridge Logic. I get it.
  - Icy what you did there.
Poison Ivy was sitting in her chair/plant when she kisses Robin. She fights him and Batman. Then Batgirl comes in and they fight. Batgirl pushes her into the chair/plant which eats her... No reason was given as to why her chair just ate her...