Jon:Your dense, there is no
difference between sub and dub people can watch what they like.
Tim:I'm not too dense to know the
difference between your and you're. Hint: you used
the wrong one.
In this example Tim had no come back that wouldn't sound stupid so he went for the I win and am smart your you're correction,but in reality youngs law goes into effect and tim has lost the debate and has nothing smart worth adding.