My poop is extremly liquidy. what can be wrong?!

Liquid stool: Liquid stool can be caused by many things including ibs, viruses, bacterial causes, colitis, and many more GI diseases. See your dr for an evaluation if this persists, and you will most likely need a GI evaluation to properly DX your cause, which will lead to the proper treatment, best wishes.

Infectious, diet,IBS: If short lived could be virus or infection from bacteria or parasite. If long lasting could be reaction to foods in diet i.e. Caffeine, dairy, certain fruits or artificial sweeteners. Could also be irritable bowel from stress.