Judge: So you think you are innocent, huh?
Joe: Yea, until proven guilty.
Prosecutor: Did you steal that donut?
Prosecutor: Until proven guilty?
Joe: Yea. What do you think, I'm an expert on the law?
Judge: You know right from wrong, don't ya?
Joe: Right from left, on a good day.
Prosecutor: Do you frequent donut shops?
Joe: Doesn't everyone?
Judge: Please answer the question directly.
Prosecutor: This tape shows you putting a donut in your pocket? Did you do that?
Judge: Until proven guilty. Dismissed!
P.S. I woke up in the middle of the night with the fallacy here. The phrase is: "presume innocent." It is not to say that you are "innocent until proven guilty" but rather presumed, which is almost like... "no matter whether you are innocent or guilty, we will assume for now that you are innocent."