Hello I'm not sure how common is this mistake in colloquial language,specifically among native English speakers, actually I would not define if as a mistake but rather considered it as a hypercorrection. So I was simply thinking, and this kind of pun just pop in my mind. Between U and I is nothing. or Between you and I is nothing. I would appreciate a comment from some of you if you would happen to find it funny and read it as a pun, or it has no sense at all.