Lead engineer: "Well, uh... I haven't really prepared a test for you but the HR insists that I should test you before wrapping up this interview.. so uh.... what do you suggest we should do now?"

Me: "Um... how about we walk through my latest project code and you can ask me to optimize it?"

Lead engineer: "Sounds cool, allright let's do that. How much time do you need?"

Welp. Did I just pick my own interview question?