"So I'm (blah blah blah) (past point in time)?"
Example: "So I'm doing my laundry the other day?" (Because people who use this phrase seem almost invariably to couple it with the Misplaced Interrogative Lift.)
No, you're fucking not doing whatever it was you were doing, because it's not the other day anymore. You were doing it, then -- now you're standing here telling me about it, but sounding like Ralph Wiggum after a weird time travel accident. I'm only telling you that because the way you talk made it sound like you were fucking asking me, instead of telling me.