dog water is a way of saying something is trash. something isn't working right? it's dog water. someone is being fake? they're dog water. dog water can be used in many ways and referring to almost anything.
*someone does something stupid*
Madi: you're literal dog water that's why you have no funds with your dollar tree headset and why you have no pr you're cheaper than dollar tree with a one dollar off coupon *continues on with insults*